1                                          Exhibit 10.12

                                TRUST UNDER
                             SUN COMPANY, INC.
                   DIRECTORS' DEFERRED COMPENSATION PLAN

This TRUST AGREEMENT (the "Trust"), is made this  1st  day of February,
1996 by and between Sun Company, Inc., a Pennsylvania corporation (the
"Company"), Mellon Bank, N.A. (the "Trustee") and Towers Perrin (the
"Recordkeeper").

     WHEREAS, Company has adopted a nonqualified deferred compensation Plan
known as Sun Company, Inc. Directors' Deferred Compensation Plan, ("the
Plan").

     WHEREAS, Company has incurred or expects to incur liability under the
terms of such Plan with respect to the Directors participating in such Plan
("Plan Participants").

     WHEREAS, the Company desires to assure that the future payment of such
amounts will not be improperly withheld in the event that a Change in
Control of the Company should occur; and

     WHEREAS, for purposes of assuring that such payments will not be improperly
withheld, the Company desires to deposit with the Trustee, subject only to the
claims of the Company's creditors as provided herein, amounts sufficient to make
such payments as they may become due and payable; and

     WHEREAS, Company wishes to establish a trust (hereinafter called "Trust")
and to contribute to the Trust assets that shall be held therein, subject to the
claims of Company's creditors in the event of Company's Insolvency (as herein
defined in section 5 (a)) until paid to Plan Participants and their
beneficiaries in such manner and at such times as specified in the Plans;

     WHEREAS, it is the intention of the parties that this Trust shall
constitute an unfunded arrangement and shall not affect the status of the Plan
as an unfunded plan maintained for the purpose of providing deferred
compensation for a group of Directors for purposes of Title I of the Employee
Retirement Income Security Act of 1974;

     WHEREAS, it is the intention of Company to make contributions to the Trust
to provide itself with a source of funds to assist it in the meeting of its
liabilities under the Plan;

     NOW, THEREFORE, the parties do hereby establish the Trust and agree that
the Trust shall be comprised, held and disposed of as follows:

 
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Section 1. The Plan

(a)  Prior to a Change in Control of the Company, the Compensation Committee of
     the Board of Directors of the Company (the "Compensation Committee") may
     from time to time designate additional plans and/or agreements that are
     subject to this Trust (collectively referred to as the "Plans") or delete
     any Plan from this Trust. Any additional plans which are subject to this
     Trust will be listed on Appendix A hereto.

(b)  The Company (or certain of its subsidiaries) shall continue to be liable to
     the Plan Participants to make all payments required under the terms of the
     Plans to the extent such payments have not been made pursuant to this
     Trust. Distributions made from the Trust to or for Plan Participants in
     respect of the Plan pursuant to Section 4 hereof, shall, to the extent of
     such distributions, satisfy the Company's (or certain of its subsidiaries')
     obligation to pay benefits to such Plan Participants under the Plans.

Section 2. Establishment of Trust

(a)  Company hereby deposits with Trustee in trust the sum of $100 in cash which
     shall become the principal of the Trust to be held, administered and
     disposed of by Trustee as provided in this Trust Agreement.

(b)  The Trust hereby established is revocable by Company; it shall become
     irrevocable upon a Change of Control, as defined herein.

(c)  The Trust is intended to be a grantor trust, of which Company is the
     grantor, within the meaning of subpart E, part I, subchapter J, chapter 1,
     subtitle A of the Internal Revenue Code of 1986, as amended, and shall be
     construed accordingly.

(d)  The principal of the Trust, and any earnings thereon shall be held separate
     and apart from other funds of Company and shall be used exclusively for the
     uses and purposes of Plan Participants and general creditors as herein set
     forth. Plan Participants and their beneficiaries shall have no preferred
     claim on, or any beneficial ownership interest in, any assets of the Trust.
     Any rights created under the Plans and this Trust Agreement shall be mere
     unsecured contractual rights of Plan Participants and their beneficiaries
     against Company. Any assets held by the Trust will be subject to the claims
     of Company's general creditors under federal and state law in the event of
     Insolvency, as defined in Section 5(a) herein.

 
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(e)  In the event of a Potential Change in Control of the Company, an additional
     amount of cash (or property acceptable to the Trustee having a fair market
     value equal to such amount, or some combination thereof), representing the
     sum of the amounts, determined as provided below, plus an amount equal to
     5% of that amount to provide for expenses and other costs of maintaining
     the Trust (collectively, the "Required Funding Amount"), shall be delivered
     not later than 30 days after the occurrence of a Potential Change in
     Control of the Company (as defined in Section 13(e) hereof).

(f)  In the event the Compensation Committee designates additional Plans that
     are subject to this Trust and/or Plans subject to this Trust are amended
     after a Potential Change in Control of the Company, the Treasurer shall,
     unless the Trust Corpus shall theretofore have been released pursuant to
     Section 6(a) hereof, recalculate the Required Funding Amount. If the amount
     so calculated exceeds the fair market value of the assets then held in
     trust, the Company shall promptly (and in no event later than 30 days from
     the date of such recalculation) pay to the Trustee an amount of cash (or
     property acceptable to the Trustee have a fair market value equal to such
     amount or some combination thereof) equal to such excess. If the Required
     Funding Amount so calculated is less than the fair market value of the
     assets held in trust, the Trustee shall retain such difference.

(g)  If, subsequent to a Control Transaction which has not been expressly
     approved by at least a majority vote of the Continuing Directors, there is
     a Change in Control, Company shall, as soon as possible, but in no event
     longer than one (1) day following the Change in Control, as defined herein,
     make an irrevocable contribution to the Trust in an amount that is
     sufficient to pay each Plan Participant or beneficiary the benefits to
     which Plan Participants or their beneficiaries would be entitled pursuant
     to the terms of the Plan as of the date on which the Change in Control
     occurred. This Required Funding Amount shall be determined in a way that
     will provide the Trust with sufficient assets, taking into consideration
     Section 3(e), to pay all benefits accrued by the Plan Participants through
     the date of the Change in Control of the Company under the terms of the
     Plans in effect on such date. The Company agrees not to challenge the
     Treasurer's calculation of the required Funding Amount upon and after a
     Change in Control of the Company.

 
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(h)  The Company agrees to pay interest on any delinquent payment of the
     Required Funding Amount from the date of a Change in Control of the
     Company, based upon the daily average of the prime rate charged by the
     Trustee.

(i)  In determining the Required Funding Amount with respect to any payment or
     series of payments expected to be due more than one year after the date as
     of which the required Funding Amount is to be determined, the present value
     of such payment or series of payments shall be calculated by using a
     discount rate equal to one percentage point less than the then lowest
     annual yield to maturity on United States Treasury obligations having then
     remaining maturities approximately equal to the maturity of the payment or
     payments being valued.

(j)  Payment by the Company pursuant to Section 2(a) and 2(e) hereof shall be
     accompanied by a schedule delivered to the Recordkeeper (as described in
     Section 4(d) of the individual Plan for whose account such payment is being
     made, which schedule sets forth the amounts delivered in respect of the
     Plan. The Recordkeeper shall maintain separate account for the Plan (the
     "Account"). Each Account shall consist of contributions to and payments
     from the Trust Corpus which are allocable to the Plan, and earnings
     thereon, less disbursements therefrom attributable to the interest of the
     Plan in the Trust Corpus.

Section 3.  Investment Authority

(a)  As used herein, the term "Trust Corpus" shall mean the amounts delivered to
     the Trustee pursuant to the terms hereof, less amounts distributed from the
     Trust pursuant to the terms hereof, plus all income earned by the Trust, in
     whatever form held or invested as provided herein.

(b)  Trustee may invest in securities (including stock or rights to acquire
     stock) or obligations issued by Company. All rights associated with assets
     of the Trust shall be exercised by Trustee or the person designated by
     Trustee, and shall in no event be exercisable by or rest with Plan
     Participants. Subject to investments guidelines agreed to in writing from
     time to time by the Trustee and the Benefit Plans Investment Committee
     until a Change in Control occurs, the Trustee shall have the following
     powers and discretion in addition to those conferred by law:

 
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     (1)  To invest and reinvest the Trust Corpus in such stocks (of any
          classification, including common and preferred stocks), bonds, or
          other property (real, personal or mixed) and interests in
          investment companies and investment trusts;

     (2)  To sell, exchange, convey, transfer or dispose of, and also to grant
          options with respect to, any property, whether real or personal, at
          any time held by it by private contract or by public auction, for cash
          or upon credit, or partly for cash and partly upon credit, as the
          Trustee may deem best, and no person dealing with the Trustee shall be
          bound to see to the application of the purchase money or to inquire
          into the validity, expediency or propriety of any such sale or other
          disposition;

     (3)  To acquire, hold and dispose of any real estate, at such time, in such
          manner and upon such terms as the Trustee may deem advisable; to
          retain, manage, operate, repair, improve, partition, mortgage or lease
          for any term or terms of years any such real estate, or to exchange
          all or any part thereof for other real estate, upon such terms and
          conditions as the Trustee deems proper, using other trust assets for
          any of such purposes if deemed advisable;

     (4)  To compromise, compound and settle any debt or obligation due to or
          from the Trust and to reduce the rate of interest thereon, to extend
          or otherwise modify, or to foreclose upon default or otherwise enforce
          or act with respect to any such obligation as the Trustee may deem
          advisable;

     (5)  With respect to stocks, bonds or securities excluding stocks, bonds or
          securities of the Company, to vote, in person or by general or limited
          proxy, any stocks or other securities at any time held in the Trust
          Corpus, at any meeting of stockholders or security holders, in respect
          to any business which may come before the meeting; to exercise any
          options appurtenant to any stocks, bonds or other securities for the
          conversion thereof into other stocks, bonds or securities; to exercise
          or sell any conversion or subscription rights appurtenant to any
          stocks, bonds or other securities at any time held in the Trust
          Corpus, and to make any and

 
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          all necessary payments therefor; to join in, and to approve, or to
          dissent from and to oppose, any corporate act or proceeding, including
          any reorganization, recapitalization, consolidation, merger,
          dissolution, liquidation, sale of assets or other action by or plan in
          respect of corporations or properties, the stocks or securities of
          which may at any time be held in the Trust Corpus; to deposit with any
          committee or depository, pursuant to any plan or agreement of
          protection, reorganization, consolidation, sale, merger, or other
          readjustment, any property held in the Trust Corpus; and to make
          payment from the Trust Corpus of any charges or assessments imposed by
          the terms of any such plan or agreement;

     (6)  With respect to stocks, bonds or securities of the Company, the
          Trustee shall exercise the powers under Section 3(b)(5) at its
          discretion.

     (7)  To accept and hold any securities or other property received by
          it under the provisions of any of the subdivisions of this
          Article whether or not the Trustee would be authorized hereunder
          then to invest therein;

     (8)  To borrow money upon such terms and conditions at the Trustee
          shall deem advisable to carry out the purposes of the Trust and
          to pledge securities or other property of the Trust Corpus in
          repayment of any such loan;

     (9)  To enforce any right, obligation or claim and in general to
          protect in any way the interest of the Trust Corpus, either
          before or after default, and in case the Trustee shall, in its
          discretion, consider such action for the best interest of the
          Trust Corpus, to abstain from the enforcement of any right,
          obligation or claim and to abandon any property, whether real or
          personal which at any time may be held by the Trustee;

     (10) To make, execute, acknowledge and deliver any and all deeds,
          leases, assignments transfers, conveyances and any and all other
          instruments necessary or appropriate to carry out any powers
          herein granted;

 
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     (11) To cause any investments from time to time held by it hereunder
          to be registered in, or transferred into, its name as Trustee or
          the name of its nominee or nominees, and with or without
          designation of fiduciary capacity, or to retain any investments
          unregistered or in form permitting transfer by delivery, but the
          books and records of the Trustee shall at all times show that all
          such investments are part of the Trust Corpus;

     (12) To hold any part or all of the Trust Corpus uninvested; and

     (13) To do all acts which may be necessary or proper and to exercise any
          and all of the powers of the Trustee under this Agreement upon such
          terms and conditions as to the Trustee may seem in the best interests
          of the Trust Corpus.

(c)  Upon and after a Change in Control, the Trustee shall use its good
     faith efforts to invest or reinvest all or such part of the Trust
     Corpus as it believes prudent under the circumstances (taking into
     account, among other things, anticipated cash requirements for the
     payment of benefits under the Plans communicated to the Trustee by the
     Recordkeeper) solely in direct obligations of the United States of
     America or agencies thereof or obligations unconditionally and fully
     guaranteed as to principal and interest by the United States of
     America, and with respect to such investments the Trustee shall have
     the powers and discretion set forth in Section 3(b) in addition to
     those conferred by law; provided, however, that the Trustee shall not
     be liable for any failure to maximize the income earned on that
     portion of the Trust Corpus as is from time to time invested or
     reinvested as set forth under Section 3(c), nor for any loss of income
     due to liquidation of any investment which liquidation is necessary to
     make payments or to reimburse expenses under the terms of this Trust.

(d)  All losses of income or principal in respect of, and expenses
     (including taxes and, as provided in Section 9   hereof, any expenses
     of the Trustee) charged against, the Trust Corpus shall be for the
     account of the Company and the Company shall be obligated to reimburse
     the Trust Corpus for any loss in principal amount of, or expense
     charged against, the Trust Corpus except to the extent that such
     amounts have been applied to reduce amounts payable by the Company (or
     certain of its subsidiaries) pursuant to Section 4 hereof. 

 
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     The Trustee shall promptly notify the Company in writing of the amount
     of such reimbursement.  The Company agrees that, upon receipt of such
     notice, it will deliver to the Trustee to be held in the Trust an
     amount in cash equal to any reimbursement amount specified by the
     Trustee, together with interest from the date of receipt of such
     notice based upon the daily average of the prime rate charged by the
     Trustee.

(e)  Company shall have the right at any time, and from time to time in its
     sole discretion, to substitute assets of equal fair market value for
     any asset held by the Trust.  This right is exercisable by Company in
     a nonfiduciary capacity without the approval or consent of any person
     in a fiduciary capacity.  

Section 4.  Payments to Plan Participants and Their Beneficiaries

(a)  By its acceptance of this Trust the Trustee hereby agrees to the
     designation by the Company of Towers Perrin as its recordkeeper
     ("Recordkeeper") under this Trust.  It is recognized that the Trustee
     shall have no responsibility hereunder for the continued retention of
     the Recordkeeper and/or any responsibility assigned to said
     Recordkeeper or its performance thereof.  Upon and after a Change in
     Control of the Company, the Trustee shall have the sole authority to
     retain, dismiss or appoint the Recordkeeper for the Trust on such
     terms and conditions as the Trustee deems appropriate.  The Company
     shall pay or reimburse the Trustee for all fees and expenses of the
     Recordkeeper.

(b)  Except for the records dealing solely with the Trust Corpus and its
     investment, which shall be maintained by the Trustee, the Recordkeeper
     shall maintain all the records contemplated by this Agreement,
     including the maintenance of the separate Accounts of each Plan under
     this Trust and the maintenance of Plan Participant's interests.  The
     Recordkeeper shall also be responsible for information with respect to
     payments to Plan Participants and shall perform such other duties and
     responsibilities as the Trustee determines are necessary or advisable
     to achieve the objectives of this Trust.

 
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(c)  Upon the establishment of this Trust or as soon thereafter as practicable,
     the Company shall furnish to the Recordkeeper all the information necessary
     to determine the benefits payable to or with respect to each Plan
     Participant in each Plan, including any benefits payable after the Plan
     Participant's death and the recipient of same. The Company shall regularly,
     at least annually, furnish revised up-dated information to the
     Recordkeeper. In the event the Company refuses or neglects to provide
     updated Plan Participant information, as contemplated herein, the
     Recordkeeper shall be entitled to rely upon the most recent information
     furnished to it by the Company.

(d)  The Recordkeeper, on behalf of the Company, shall deliver to Trustee a
     schedule (the "Payment Schedule") that indicates the amounts payable
     in respect of each Plan participant (and his or her beneficiaries),
     that provides a formula or other instructions acceptable to Trustee
     for determining the amounts so payable, the form in which such amount
     is to be paid (as provided for or available under the Plans), and the
     time of commencement for payment of such amounts.  Except as otherwise
     provided herein, Trustee shall make payments to the Plan Participants
     and their beneficiaries in accordance with such Payment Schedule.  The
     Trustee shall make provision for the reporting and withholding of any
     federal, state or local taxes that may be required to be withheld with
     respect to the payment of benefits pursuant to the terms of the Plans
     and shall pay amounts withheld to the appropriate taxing authorities
     or determine that such amounts have been reported, withheld and paid
     by Company.

(e)  The entitlement of a Plan Participant or his or her beneficiaries to
     benefits under the Plan shall be determined by the Recordkeeper, on
     behalf of the Company, and any claim for such benefits shall be
     considered and reviewed under the procedures set out in the Plan and
     this Trust Agreement.

(f)  Company may make payment of benefits directly to Plan Participants or
     their beneficiaries as they become due under the terms of the Plans. 
     Company shall notify Trustee and Recordkeeper of its decision to make
     payment of benefits directly prior to the time amounts are payable to
     Plan Participants or their beneficiaries.  In addition if the
     principal of the Trust, and any earnings thereon, are not sufficient
     to make payments of benefits in accordance with the terms of the
     Plans, Company shall make the balance of each such payment as it falls
     due.  Trustee shall notify Company where principal and earnings are
     not sufficient.

 
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(g)  The Recordkeeper shall notify the Plan Participant or the beneficiary
     of a deceased Plan Participant that Plan Participant's benefits under
     a Plan have become payable.  Such notice shall include the amount of
     such benefits, the manner of payment and the name, address and social
     security number of the Plan Participant.  

(h)  All benefits payable from the Trust Corpus to a Plan Participant or
     his beneficiary under a Plan shall be paid solely from the Account of
     such Plan.  Upon the satisfaction of all liabilities under a Plan in
     respect of Plan Participant under a Plan, the Recordkeeper shall
     prepare a certification to the Trustee showing the balance, if any,
     remaining in the Account for such Plan.  Upon the satisfaction of all
     liabilities of the Company under the Plan, the Recordkeeper shall
     prepare a certification to the Trustee and the Trustee shall thereupon
     distribute the Trust Corpus to the Company.  The Trustee and the
     Recordkeeper shall have no responsibility for determining whether any
     Plan Participant or beneficiary has died and shall be entitled to rely
     upon information furnished by the Company.

(i)  Except as otherwise provided herein, in the event of any final
     determination by the Internal Revenue Service or a court of competent
     jurisdiction, which determination is not appealable or with respect to
     which the time for appeal has expired, or the receipt by the Trustee
     of a substantially unqualified opinion of tax counsel selected by the
     Trustee, which determination determines, or which opinion opines, that
     the Plan Participants or any particular Plan Participant, is subject
     to federal income taxation on amounts held in Trust hereunder prior to
     the distribution to the Plan Participants of such amounts, the
     Trustee, on receipt by the Trustee, of such opinion or notice of such
     determination, shall pay to each Plan Participant the portion of the
     Trust Corpus includable in such Plan Participant's federal gross
     income.

(j)  The Company agrees to indemnify and hold harmless the Recordkeeper
     from and against any and all damages, losses, claims, fees or expenses
     as incurred (including expenses of investigation and fees or expenses
     as incurred (including expenses of investigation and fees and
     disbursements of counsel to the Recordkeeper) arising out of or in
     connection with the performance by the Recordkeeper of its duties
     hereunder.  Any amount payable to the Recordkeeper under paragraph (a)
     of this Section 4 or this paragraph (j) and not previously paid by the
     Company shall be paid by the

 
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     Company promptly upon demand therefore by the Trustee or, if not paid
     by the Company within 30 days of the Trustee's demand, from the Trust
     Corpus.  In the event that payment is made hereunder to the
     Recordkeeper from the Trust Corpus, the Trustee shall promptly notify
     the Company in writing of the amount of such payment.  The Company
     agrees that, upon receipt of such notice, it will deliver to the
     Trustee to be held in the Trust an amount in cash equal to any
     payments made from the Trust Corpus to the Trustee pursuant to
     paragraph (a) of this Section 4 or this paragraph (j), together with
     interest from the date of receipt of such notice based upon the daily
     average of the prime rate charged by the Trustee.  The failure of the
     Company to transfer any such amount shall not in any way impair the
     Recordkeeper's right to indemnification, reimbursement and payment
     pursuant to paragraph (a) of this Section 4 or this paragraph (j).

(k)  The Recordkeeper may resign and be discharged from its duties
     hereunder at any time by giving notice in writing of such resignation
     to the Company, or if a Change in Control shall previously have
     occurred, the Trustee, specifying a date (not less than 30 days after
     the giving of such notice) when such resignation shall take effect. 
     Promptly after such notice, the Company, or if a Change in Control
     shall previously have occurred, the Trustee, shall appoint a successor
     recordkeeper, such recordkeeper to become Recordkeeper hereunder upon
     the resignation date specified in such notice.  If the Company or the
     Trustee is unable to appoint a successor recordkeeper within 60 days
     after such notice, the Recordkeeper shall be entitled, at the expense
     of the Company, to petition a United States District Court or any
     court of competent jurisdiction in the state in which the Recordkeeper
     maintains its principal place of business to appoint its successor. 
     The Recordkeeper shall continue to serve until its successor accepts
     the responsibility of recordkeeper.  The Company, or if a Change in
     Control shall previously have occurred, the Trustee, may at any time
     substitute a new recordkeeper by giving 15 days notice thereof of the
     Recordkeeper then acting.  In the event of such removal or
     resignation, the Recordkeeper shall provide its successor with the
     records and information in its possession relating to the performance
     of its duties under this Trust.

 
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Section 5.  Trustee Responsibility Regarding Payments to Trust Beneficiary
When Company Is Insolvent.

(a)  Trustee shall cease payment of benefits to Plan Participants and their
     beneficiaries if the Company is Insolvent.  Company shall be
     considered "Insolvent" for purposes of this Trust Agreement if (i)
     Company is unable to pay its debts as they become due, or (ii) Company
     is subject to a pending proceeding as a debtor under the United States
     Bankruptcy Code.

(b)  At all times during the continuance of this Trust, as provided in
     Section 1(D) hereof, the principal and income of the Trust shall be
     subject to claims of general creditors of Company under federal and
     state law as set forth below.

     (1)  The Board of Directors and the Chief Executive Officer of Company
          shall have the duty to inform Trustee in writing of Company's
          insolvency.  If a person claiming to be a creditor of Company
          alleges in writing to Trustee that Company has become Insolvent,
          Trustee shall determine whether Company is Insolvent and, pending
          such determination, Trustee shall discontinue payment of benefits
          to Plan participants or their beneficiaries.

     (2)  Unless Trustee has actual knowledge of Company's insolvency, or has
          received notice from Company or a person claiming to be a creditor
          alleging that Company is Insolvent, Trustee shall have no duty to
          inquire whether Company is Insolvent. Trustee may in all events rely
          on such evidence concerning Company's solvency as may be furnished to
          Trustee and that provides Trustee with a reasonable basis for making a
          determination concerning Company's solvency.

     (3)  If at any time Trustee has determined that Company is Insolvent,
          Trustee shall discontinue payments to Plan Participants or their
          beneficiaries and shall hold the assets of the Trust for the benefit
          of Company's general creditors. Nothing in this Trust Agreement shall
          in any way diminish any rights of Plan Participants or their
          beneficiaries to pursue their rights as general creditors of Company
          with respect to benefits due under the Plans or otherwise.

     (4)  Trustee shall resume the payments of benefits to Plan Participants or
          their beneficiaries in accordance with Section 4 of this Trust
          Agreement only after Trustee has determined that Company is not
          insolvent (or is no longer Insolvent).

 
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(c)  Provided that there are sufficient assets, if Trustee discontinues the
     payment of benefits from the Trust pursuant to Section 5(b) hereof and
     subsequently resumes such payments, the first payment following such
     discontinuance shall include the aggregate amount of all payments due
     to Plan Participants or their beneficiaries under the terms of the
     Plans for the period of such discontinuance, less the aggregate amount
     of any payments made to Plan Participants or their beneficiaries by
     Company in lieu of the payments provided for hereunder during any such
     period of discontinuance.

Section 6.  Payments to Company

(a)  In the event the Company delivers the Required Funding Amount to the
     Trustee because of a Potential Change in Control, the Trust Corpus
     shall be returned to the Company one year after delivery of the
     Required Funding Amount to the Trustee unless a Change in Control
     shall have occurred during such one-year period.  Such one-year period
     shall recommence in the event of and upon the date of any subsequent
     Potential Change in Control.  If another Potential Change in Control
     should occur after the Trust Corpus has been returned to the Company
     as provided in this Section 6(a), the Company shall deliver a new
     Required Funding Amount to the Trustee pursuant to Section 2.  The
     Company shall notify the Trustee of the occurrence of a Potential
     Change in Control and Change in Control and the Trustee may rely on
     such notice.

(b)  Except as provided in Section 5 hereof, after the trust has become
     irrevocable, Company shall have no right or power to direct Trustee to
     return to Company or to divert to others any of the Trust assets
     before all payment of benefits have been made to Plan Participants and
     their beneficiaries pursuant to the terms of the Plans. 

Section 7.  Disposition of Income.

During the term of this trust, all income received by the Trust, net of
expenses and taxes, shall be accumulated and reinvested.

Section 8.  Claims Procedures

(a)  The Company agrees that by establishment of this Trust it hereby
     forgoes any review (judicial or otherwise) of certifications by the
     Recordkeeper as to the benefit payable to any persons hereunder.

 
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(b)  If a dispute arises as to the amounts or timing of any benefits or the
     persons entitled thereto under this Trust, such dispute shall be
     resolved under a claims review procedure established and maintained by
     the Recordkeeper that includes the following:

     (1)  The manner in which a claim is made.

     (2)  Provisions to the effect that, in the event of a denial of a
          claim as to the amount of any distribution and/or the method of
          payment under any Plan by the Recordkeeper, a claimant will be
          given notice in writing of such detail within 90 days, which
          notice will set forth the reason for the denial, the pertinent
          Plan provision on which the denial is based, a description of the
          information necessary to perfect the claim and an explanation of
          why such information is necessary, and appropriate steps to be
          taken by the claimant to submit the claim for review.

     (3)  Provisions to the effect that the claimant may request a review
          of such denial by filing notice in writing with the Recordkeeper,
          within 60 days after receipt of such denial, may review pertinent
          documents and may submit issues and comments in writing.

     (4)  Provisions for the Recordkeeper, in its discretion, to request a
          meeting to clarify an immediate matters it deems appropriate.

     (5)  Provisions to the effect that all interpretations,
          determinations, and decisions of the Recordkeeper in respect to
          any matter will be final, conclusive, and binding upon the
          claimant.

(c)  By making a Plan subject to the Trust, the claims review procedures of
     paragraph (b) of this Section 8 supersede any claims review procedures
     in the Plan to the extent of any benefits payable from the Trust.

Section 9.  Trustee

(a)  The duties and responsibilities of the Trustee shall be limited to
     those expressly set forth in this Trust, and no implied covenants or
     obligations shall be read into this trust against the Trustee.

 
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(b)  The Trustee shall maintain such books, records and accounts as may be
     necessary for the proper administration of the Trust Corpus and shall
     render to the Company (and the Plan Participants after a Change in
     Control of the Company has occurred), on or prior to each April 1
     following the date this Trust was created until the termination of
     this Trust (and on the date of such termination), an accounting with
     respect to the Trust Corpus as of the end of the then most recent
     calendar year (and as of the date of such termination).  Unless the
     Company (or any Plan Participant after a Change in Control of the
     Company has occurred) shall have filed with the Trustee written
     exceptions or objections to any such statement and account within 180
     days after receipt thereof, the Company or any Plan Participant, as
     the case may be, shall be deemed to have approved such statement and
     account, and in such case the Trustee shall be forever released and
     discharged with respect to all matters and things reported in such
     statement and account as though it had been settled by a decree of a
     court of competent jurisdiction in an action or proceeding to which
     the Company and any Plan Participate were parties.

(c)  The Trustee shall not be liable for any act taken or omitted to be
     taken hereunder if taken or omitted to be taken by it in good faith. 
     The Trustee shall also be fully protected in relying upon any notice
     given hereunder which it in good faith believes to be genuine and
     executed and delivered in accordance with this Trust.

(d)  The Trustee may consult with legal counsel to be selected by it, and
     the Trustee shall not be liable for any action taken or suffered by it
     in good faith in accordance with the advice of such counsel.

(e)  The Trustee shall be reimbursed by the Company for its reasonable
     expenses, including without limitation any expenses incurred under
     paragraph (g) of this Section 9,
     incurred in connection with the performance of its duties hereunder
     and shall be paid such fees for the performance of such duties as may
     be agreed upon in writing from time to time between the Company and
     the Trustee.  After a Change in Control of the Company has occurred,
     the fees of the Trustee shall be determined by the application of the
     current rates then charged by the Trustee for the provision of the
     types of investment and trustee services contemplated in this Trust to
     trusts of a similar character.  The Trustee's reasonable expenses and
     fees shall be paid in the manner provided by paragraph (f) of this
     Section 9.  

 
16

(f)  The Company agrees to indemnify and hold harmless the Trustee from and
     against any and all damages, losses, claims or expenses as incurred
     (including expenses of investigation and fees and disbursements of
     counsel to the Trustee and any taxes imposed on the Trust Corpus or
     income of the Trust) arising out of or in connection with the
     performance by the Trustee of its duties hereunder.  Any amount
     payable to the Trustee under paragraph (e) of this Section 9 or this
     paragraph (f) and not previously paid by the Company shall be paid by
     the Company promptly upon demand therefore by the trustee or, if the
     Trustee so chooses in its sole discretion, from the Trust Corpus.  In
     the event that payment is made hereunder to the Trustee from the Trust
     Corpus, the Trustee shall promptly notify the Company in writing of
     the amount of such payment.  The Company agrees that, upon receipt of
     such notice, it will deliver to the Trustee to be held in the Trust an
     amount in cash equal to any payments made from the Trust Corpus to the
     Trustee pursuant to paragraph (e) of this Section 9 or this paragraph
     (f), together with interest from the date of receipt of such notice
     based upon the daily average of the prime rate charged by the Trustee. 
     The failure of the Company to transfer any such amount shall not in
     any way impair the Trustee's right to indemnification, reimbursement
     and payment pursuant to paragraph (e) of this Section 5.01 or this
     paragraph (f).

(g)  The Trustee is specifically authorized and required to take such
     action as may be necessary or appropriate, including the institution
     of litigation or other legal process, to enforce the Company's
     obligations hereunder, and any expenses thus incurred by the Trustee
     shall be paid or reimbursed by the Company pursuant to paragraphs (e)
     and (f) of this Section 9.

(h)  Trustee shall have, without exclusion, all powers conferred on
     Trustees by applicable law, unless expressly provided otherwise
     herein, provided, however, that if an insurance policy is held as an
     asset of the Trust, Trustee shall have no power to name a beneficiary
     of the policy other than the Trust, to assign the policy (as distinct
     from conversion of the policy to a different form) other than to a
     successor Trustee, or to loan to any person the proceeds of any
     borrowing against such policy.

 
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(i)  Notwithstanding any powers granted to Trustee pursuant to this Trust
     Agreement or to applicable law, Trustee shall not have any power that
     could give this Trust the objective of carrying on a business and
     dividing the gains therefrom, within the meaning of Section 301.7701-2
     of the Procedure and Administrative Regulations promulgated pursuant
     to the Internal Revenue Code.

Section 10.  Resignation and Removal of Trustee.

(a)  The Trustee may resign at any time by written notice to the Company,
     which shall be effective 30 days after receipt of such notice unless
     Company and Trustee agree otherwise.  If a Change of Control shall
     previously have occurred, the Trustee shall give such resignation
     notice, in writing, to the Company and the Plan Participants,
     specifying a date (not less than 30 days after the giving of such
     notice) when such resignation shall take effect.  Promptly after such
     notice, the Company, or if a Change in Control shall previously have
     occurred, the Company and at least 80% of the Plan Participants then
     entitled to receive payments hereunder, shall appoint a successor
     trustee, such trustee to become Trustee hereunder upon the resignation
     date specified in such notice.  If the Company and such Plan
     Participants are unable to appoint a successor trustee within 60 days
     after such notice, the Trustee shall be entitled, at the expense of
     the Company, to petition a United States District Court or any court
     of competent jurisdiction in the state in which the Trustee maintains
     its principal place of business to appoint its successor, in
     accordance with section 10(c).  The Trustee shall continue to serve
     until its successor accepts the Trust and receives delivery of the
     Trust Corpus.  The Company, or if a Change in Control shall previously
     have occurred, the Company and at least 80% of the Plan Participants
     then entitled to receive payments hereunder, may at any time
     substitute a new trustee by giving 15 days notice thereof to the
     Trustee then acting.  In the event of such removal or resignation, the
     Trustee shall duly file with the Company and, on and after a Change in
     Control, the Plan Participants, a written statement or statements of
     accounts and proceedings as provided in Section 9(b) hereof for the
     period since the last previous annual accounting of the Trust, and if
     written objections to such account are not filed as provided in
     Section 9(b) hereof, the Trustee shall to the maximum extent permitted
     by applicable law be forever released and discharged from all
     liability and accountability with

 
18

     respect to the propriety of its acts and transactions shown in such
     account.  The Trustee and any successor thereto appointed hereunder
     shall be a corporate professional trustee which is not an affiliate of
     the Company but which has equity in excess of $100,000,000.00.

(b)  Upon resignation or removal of Trustee and appointment of a successor
     Trustee, all assets shall subsequently be transferred to the successor
     Trustee.  The transfer shall be completed within 30 days after receipt
     of notice of resignation, removal or transfer, unless Company extends
     the time limit.

(c)  If Trustee resigns or is removed, a successor shall be appointed, in
     accordance with Section 10 hereof, by the effective date of
     resignation or removal under paragraph (a) of this section.  If no
     such appointment has been made, Trustee may apply to a court of
     competent jurisdiction for appointment of a successor or for
     instructions.  All expenses of Trustee in connection with the
     proceeding shall be allowed as administrative expenses of the Trust.  

Section 11.  Termination

Except as provided herein, this Trust shall be irrevocable.  At any time
prior to a Change in Control of the Company, this Trust may be terminated
by the Compensation Committee.  Upon or after a Change in Control of the
Company, this trust shall not terminate until the date on which Plan
Participants and their beneficiaries are no longer entitled to benefits
pursuant to the terms of the Plans unless sooner revoked in accordance with
Section 2(b) hereof.  Upon termination of the Trust any assets remaining in
the Trust shall be returned to Company.

Section 12.  Amendment or Waiver

(a)  This Trust may be amended by a written instrument executed by Trustee
     and Company.  Notwithstanding the foregoing, no such amendment shall
     conflict with the terms of the Plans or shall make the Trust revocable
     after it has become irrevocable in accordance with Section 2(b)
     hereof.

(b)  Upon and after a Change in Control of the Company, the following rules
     will govern amendments and waivers:  (1) this Trust may not be amended
     except by an instrument in writing signed on behalf of the parties
     hereto together with the written consent of at least 80% of the Plan
     Participants then entitled to receive payments hereunder; (2) the
     parties hereto, together with the consent of not less than 80% of

 
19

     the Plan Participants then entitled to receive payments hereunder, may
     at any time waive compliance with any of the agreements or conditions
     contained herein; (3) any agreement on the part of a party hereto or
     an Plan Participant to any such waiver shall be valid if set forth in
     an instrument in writing signed on behalf of such party or Plan
     Participant; and (4) no such amendment or waiver relating to this
     Trust may be made with respect to a particular Plan Participant unless
     such Plan Participant has agreed in writing to such amendment or
     waiver. 

Section 13.  Miscellaneous.

(a)  Any provision of this Trust Agreement prohibited by law shall be
     ineffective to the extent of any such without invalidating the
     remaining provisions hereof.

(b)  Benefits payable to Plan Participants and their beneficiaries under
     this Trust Agreement may not be anticipated, assigned (either at law
     or in equity), alienated pledge, encumbered or subjected to
     attachment, garnishment, levy, execution or other legal or equitable
     process.

(c)  For purposes of this Trust, the phrase "subsequent to a Control
     Transaction which has not been expressly approved by at least a
     majority vote of the Continuing Directors, there is a change in
     Control" shall be determined by applying the following definitions:

     (1)  "Control Transaction" shall mean any of the following
          transactions or any combination thereof:  (A) any tender offer
          for or acquisition of capital stock of the Company, (B) any
          merger, consolidation, or sale of all or substantially all of the
          assets of the Company, or (C) the submission of a nominee or
          nominees for the position of director of the Company by
          shareholder or a Group of shareholders in a proxy solicitation or
          otherwise.

     (2)  "Continuing Director" shall mean a Director who was a member of
          the Board of Directors immediately prior to a Control Transaction
          which results in a Change in Control.

 
20

     (3)  "Change in Control" shall be deemed to have occurred for purposes
          of this Plan, if (A) Continuing Directors cease, within one year
          of a Control Transaction, to constitute a majority of the Board
          (or of the Board of Directors of any successor to the Company or
          to all or substantially all of its assets) or (B) any entity,
          person or Group acquires shares of the Company in a transaction
          or series of transactions that result in such entity, person or
          Group directly or indirectly owning beneficially more than fifty
          percent (50%) of the outstanding voting shares.

     (4)  "Group" shall mean persons who act in concert as described in
          Sections 13(d)(3) and/or 14(d)(2) of the Securities Exchange Act
          of 1934, as amended.

(d)  For purposes of this Trust, a "potential Change in Control" of the
     Company shall be deemed to have occurred if subsequent to the
     effective date of the Trust any of the following events or
     transactions has occurred: (1) any Person (other than the Company)
     makes a tender offer for capital stock of the Company; (2) and Person
     becomes the beneficial owner, directly or indirectly, of capital stock
     of the Company in an amount which requires the filing of Schedule 13D
     or its equivalent form pursuant to the Rules and Regulations under the
     Securities Exchange Act of 1934 as may from time to time be amended;
     (3) the submission of a nominee or nominees for the position of
     director of the Company by a shareholder or shareholders in a proxy
     solicitation or otherwise which, in its judgment the Board of
     Directors determines by adoption of a resolution within 30 days of
     such submission, might result in a Change in Control of the Company;
     (4) any Person files a pre-merger notification for the acquisition of
     capital stock of the Company pursuant to the Hart-Scott-Rodino Act; or
     (5) the Board of Directors of the Company in its judgment determines
     by adoption of a resolution that a Potential Change in Control of the
     Company for purposes of this trust has occurred.

Section 14.  Further Assurances

The Company shall, at any time and from time to time, upon the reasonable
request of the Trustee and/or Recordkeeper, execute and deliver such
further instruments and do such further acts as may be necessary or proper
to effectuate the purposes of this Trust.

 
21

Section 15.  Certain Provisions Relating to This Trust

(a)  This Trust sets forth the entire understanding of the parties with
     respect to the subject matter hereof and supersedes any an all prior
     agreements, arrangements and understandings relating thereto.  This
     Trust shall be binding upon and inure to the benefit of the parties
     and their respective successors and legal representatives.

(b)  This Trust shall be governed by and construed in accordance with the
     laws of the Commonwealth of Pennsylvania, other than and without
     reference to any provisions of such laws regarding choice of laws of
     conflict of laws.  The situs of this Trust shall be Philadelphia
     County, Pennsylvania.

(c)  The interests of the Plan Participants hereunder are not subject to
     assignment or alienation.  

(d)  Nothing in this Trust shall in any way diminish any rights of a Plan
     Participant to pursue his rights as a general creditor of the company
     (or certain of its subsidiaries) under the Plans.

(e)  The Trustee by joining in the execution of this Trust hereby signifies
     its acceptance of the trust hereby created.

(f)  In the event that any provision of this Trust or the application
     thereof to any person or circumstances shall be determined by a court
     of proper jurisdiction to be invalid or unenforceable to any extent,
     the remainder of this Trust, or the application of such provision to
     persons or circumstances other than those as to which it is held
     invalid or unenforceable, shall not be affected thereby, and each
     provision of this Trust shall be valid and enforced to the fullest
     extent permitted by law.

Section 16.  Authorization

(a)  Any action of the Board of Directors or by the Compensation Committee
     pursuant to this Trust shall be evidenced by a resolution adopted by
     the Board of Directors (or a duly authorized committee thereof) or the
     Compensation Committee that is certified to the Trustee and
     Recordkeeper by the Secretary or an Assistant Secretary of the Company
     under its corporate seal, and the Trustee and Recordkeeper shall be
     fully protected in acting in accordance with such resolution.

 
22

(b)  Any action of the Benefit Plans Investment Committee pursuant to this
     Trust shall be evidence by a written notice or direction to such
     effect over the signature of any member (or duly authorized
     representative) of the Benefit Plans Investment Committee, and the
     Trustee and the Recordkeeper shall be fully protected in acting in
     accordance with such resolution.  The Company shall provide to the
     Trustee and the Recordkeeper in writing from time to time the names
     and specimen signatures of all persons designated as members of the
     Benefit Plans Investment Committee.  The Benefit Plans Investment
     Committee shall provide to the Trustee and the Recordkeeper in writing
     from time to time the names and specimen signatures of the person or
     persons authorized to act on its behalf.  The Trustee and the
     Recordkeeper shall be fully protected in acting in accordance with
     such notices or directions.

(c)  Any action of the Chief Executive Officer or Treasurer pursuant to
     this Trust shall be evidence by a written notice or direction to such
     effect over the signature of such officer, and the Trustee and the
     Recordkeeper shall be fully protected in acting in accordance with
     such notices or directions.

(d)  Any action of the Company pursuant to this Trust shall be evidenced by
     a written notice or direction to such effect over the signature of any
     officer or other representative of the Company who shall have been
     certified to the Trustee and the Recordkeeper by the President,
     Treasurer or Secretary of the Company as having such authority.  The
     President, Treasurer or Secretary of the Company shall provide to the
     Trustee and the Recordkeeper in writing from time to time the names
     and specimen signatures of the officers and other representatives
     authorized to act on behalf of the Company.  The Trustee and the
     Recordkeeper shall be fully protected in acting in accordance with
     such notices or directions.

Section 17.  Notices

Any notice, report, demand or waiver required or permitted hereunder shall
be in writing and shall be given personally or by prepaid registered or
certified mail, return receipt requested, addressed as follows:

  If to the Board of Directors:    Sun Company, Inc.
                                   Philadelphia, PA  19103
                                   Attention:  Corporate Secretary

 
23

  If to the Compensation
  Committee:                       Sun Company, Inc.
                                   Philadelphia, PA  19103
                                   Attention:  Secretary
                                   Compensation Committee

  If to the Benefit
  Plans Investment Committee:      Sun Company, Inc.
                                   Philadelphia, PA  19103
                                   Attention:  Secretary,
                                   Benefit Plans Investment
                                   Committee

  If to the Chief Executive
  Officer:                         Sun Company, Inc.
                                   Philadelphia, PA  19103
                                   Attention:  Chief Executive
                                   Officer

  If to the Treasurer:             Sun Company, Inc.
                                   Philadelphia, PA  19103
                                   Attention:  Treasurer

  If to the Company:               Sun Company, Inc.
                                   Philadelphia, PA  19103
                                   Attention:  General Counsel

  If to the Trustee:               Mellon Bank, N.A.
                                   One Mellon Bank Center
                                   Pittsburgh, PA  15258
                                   Attention:  Anne Ayoob

  If to the Recordkeeper:          Towers Perrin 
                                   Centre Square West
                                   1500 Market Street
                                   Philadelphia, PA  19102
                                   Attention:
                                   Vice President and Director

If to an Plan Participant, to the address of such Plan Participant provided
by the Recordkeeper.

A Notice shall be deemed received upon the date of delivery if given
personally or, if given by mail, upon the receipt thereof.

 
24

Section 18.  Trust Beneficiaries

Upon and after a Change in Control of the Company, each Plan Participant is
an intended beneficiary under this Trust, and shall be entitled to enforce
all terms and provisions hereof with the same force and effect as if such
person had been a party hereto.

Section 19.  Counterparts

This Trust may be executed in any number of counterparts, each of which
shall be deemed an original, and said counterparts shall constitute but one
and the same instrument.

     IN WITNESS WHEREOF, the parties have executed this Trust as of the
date first written above.


                                   SUN COMPANY, INC.
                                     (the "Company")



                              By:  /s/ MALCOLM I. RUDDOCK, JR.
                                   ----------------------------            
                                   Malcolm I. Ruddock, Jr.
                                   Treasurer



                                   TOWERS PERRIN
                                     (the "Recordkeeper")



                              By:  /s/ CLYDE BEERS
                                   ---------------------------
                                   Vice President and Director



                                   MELLON BANK, N.A.
                                     (the "Trustee")


                              By:  /s/ ROBERT T. BORZA
                                   ---------------------------
                                   Vice President

 
25

                                APPENDIX A
                                ----------

     Additional plans (other than Directors' Deferred Compensation Plan)
and/or agreements, subject to Trust:

(1)  Indemnification Agreements with each member of the Sun Company, Inc.
     Board of Directors