THIRD AMENDMENT TO
                     AMENDED AND RESTATED CREDIT AGREEMENT

                                     Among


                          TESORO PETROLEUM CORPORATION
                                 as the Company


                                      and


                                 BANQUE PARIBAS
         Individually, as an Issuing Bank and as Administrative Agent,


                            THE BANK OF NOVA SCOTIA
                    Individually and as Documentation Agent


                                      and


                           THE FINANCIAL INSTITUTIONS
                        NOW OR HEREAFTER PARTIES HERETO



                       Effective as of September 15, 1997



                               TABLE OF CONTENTS

                                                                   Page

                            ARTICLE I.  DEFINITIONS

    Section 1.01   Terms Defined Above . . . . . . . . . . . . . . .1
    Section 1.02   Terms Defined in Credit Agreement . . . . . . . .1
    Section 1.03   Other Definitional Provisions . . . . . . . . . .1

          ARTICLE II.  AMENDMENTS TO CREDIT AGREEMENT

    Section 2.01   Amendments and Supplements to Definitions . . . .2
    Section 2.02   Amendments to Article II. . . . . . . . . . . . .5
    Section 2.03   Amendments to Article V . . . . . . . . . . . . .6
    Section 2.04   Amendments to Article VI. . . . . . . . . . . . .6

                    ARTICLE III.  CONDITIONS

    Section 3.01   Loan Documents. . . . . . . . . . . . . . . . . .8
    Section 3.02   Corporate Proceedings of Loan Parties . . . . . .8
    Section 3.03   Representations and Warranties. . . . . . . . . .8
    Section 3.04   No Default. . . . . . . . . . . . . . . . . . . .8
    Section 3.05   Security Instruments. . . . . . . . . . . . . . .8
    Section 3.06   Other Instruments or Documents. . . . . . . . . .8

                   ARTICLE IV.  MISCELLANEOUS

    Section 4.01   Adoption, Ratification and Confirmation of
                    Credit Agreement . . . . . . . . . . . . . . . .9
    Section 4.02   Ratification and Affirmation of Guaranty. . . . .9
    Section 4.03   Successors and Assigns. . . . . . . . . . . . . .9
    Section 4.04   Counterparts. . . . . . . . . . . . . . . . . . .9
    Section 4.05   Number and Gender . . . . . . . . . . . . . . . .9
    Section 4.06   Entire Agreement. . . . . . . . . . . . . . . . .9
    Section 4.07   Invalidity. . . . . . . . . . . . . . . . . . . 10
    Section 4.08   Titles of Articles, Sections and Subsections. . 10
    Section 4.09   Governing Law . . . . . . . . . . . . . . . . . 10

                                      -i-

                               THIRD AMENDMENT TO
                     AMENDED AND RESTATED CREDIT AGREEMENT


    This THIRD AMENDMENT TO AMENDED  AND  RESTATED CREDIT AGREEMENT (this "Third
Amendment") executed effective as of September 15, 1997 (the "Effective  Date"),
is  by  and  among  TESORO  PETROLEUM  CORPORATION,  a Delaware corporation (the
"Company");  BANQUE  PARIBAS,   individually,   as   an   Issuing  Bank  and  as
Administrative Agent, THE BANK OF NOVA SCOTIA, individually and as Documentation
Agent, and each of the lenders that is a signatory hereto  or  which  becomes  a
party  hereto  as  provided  in  Section  9.07  (individually,  a  "Lender" and,
collectively, the "Lenders").

                              W I T N E S S E T H:
                              - - - - - - - - - -

    WHEREAS, the Company, the Administrative Agent, the Documentation Agent, the
Issuing Bank and the Lenders  are  parties  to that certain Amended and Restated
Credit Agreement dated as of June 7, 1996, as  amended  by  First  Amendment  to
Amended  and  Restated  Credit  Agreement  dated as of March 21, 1997 and Second
Amendment to Amended and Restated  Credit  Agreement  dated as of March 31, 1997
(the "Credit Agreement"), pursuant to which the Lenders agreed to make loans and
issue Letters of Credit to and for the account of the Company; and

    WHEREAS,  the  Company,  the  Guarantors,  the  Administrative  Agent,   the
Documentation Agent, and the Lenders desire to amend the Credit Agreement in the
particulars hereinafter provided;

    NOW,  THEREFORE,  in  consideration of the premises and the mutual covenants
herein contained, the parties hereto agree as follows:


                            ARTICLE I.  DEFINITIONS

    Section 1.01 Terms Defined Above.  As  used in this Third Amendment, each of
the terms "Company", "Credit Agreement", "Effective  Date",  "Third  Amendment",
and "Lenders" shall have the meaning assigned to such term hereinabove.

    Section  1.02  Terms  Defined in Credit Agreement.  Each term defined in the
Credit Agreement and  used  herein  without  definition  shall  have the meaning
assigned to such term in the Credit Agreement, unless expressly provided to  the
contrary.

    Section 1.03 Other Definitional Provisions.

         (a)  The  words  "hereby",  "herein", "hereinafter", "hereof", "hereto"
    and "hereunder" when used in this  Third Amendment shall refer to this Third
    Amendment as a whole and not to any particular Article, Section,  subsection
    or provision of this Third Amendment.


         (b)  Section, subsection and Exhibit  references  herein  are  to  such
    Sections,  subsections and Exhibits to this Third Amendment unless otherwise
    specified.


                  ARTICLE II.  AMENDMENTS TO CREDIT AGREEMENT

    The Company, the Administrative Agent,  the Documentation Agent, the Issuing
Bank and the  Lenders  agree  that  the  Credit  Agreement  is  hereby  amended,
effective as of the Effective Date, in the following particulars.

    Section 2.01   Amendments and Supplements to Definitions.

         (a)  The  definition  of  "Agreement"  in  Section  1.01  of the Credit
    Agreement is hereby amended to mean the Credit Agreement, as amended by this
    Third Amendment and as the same  may  from  time to time be further amended,
    supplemented or modified.

         (b)  The following terms, which are defined  in  Section  1.01  of  the
    Credit Agreement, are hereby amended in their entirety to read as follows:

              "Applicable  Margin"  shall  mean (i) 0% per annum with respect to
         Base Rate Loans, and  (ii)  1.0%  per  annum with respect to Eurodollar
         Loans; provided,  however,  that  during  any  Deficiency  Period,  the
         "Applicable  Margin" as would otherwise be in effect shall be increased
         by 2.0% per annum for both Base Rate Loans and Eurodollar Loans.

              "Borrowing Base" shall mean at  any  time  the amount equal to the
         sum of (i) eighty five percent (85%) of  Eligible  Accounts  plus  (ii)
         seventy  percent  (70%)  of  the Loan Value of Eligible Inventory; plus
         (iii) one hundred percent (100%) of the E&P Borrowing Base.

              "Cash Flow" shall mean,  as  to  any  Person,  the  sum of the net
         income of such Person after taxes for any period plus,  to  the  extent
         deducted  from  net  income,  all  non-cash  items,  including, but not
         limited to,  depreciation,  depletion  and  impairment, amortization of
         leasehold and intangibles, deferred taxes and write-offs of exploration
         costs and producing lease abandonments plus, but  without  duplication,
         to the extent deducted from net income, cash not to exceed $15,000,000,
         and  all  non-cash  items  related  to  that  certain special incentive
         compensation award program which will  be funded if the Company's stock
         price reaches an average price per share  of  $20  or  higher  over  20
         consecutive  trading  days after June 30, 1997, and before December 31,
         1998; in each case for such period and determined as to such Person.

                                      -2-

              "Consolidated Tangible Net Worth" shall mean, at any time and from
         time  to  time,  the  sum of preferred or common stock not subject to a
         mandatory redemption  obligation  (other  than  a  mandatory redemption
         obligation that can be satisfied by the tendering of  common  stock  of
         the  Company)  as  of  the  date  of determination, par value of common
         stock,  additional  paid-in  capital   of  common  stock  and  retained
         earnings, plus to the extent deducted from  net  income,  cash  not  to
         exceed  $15,000,000  and  all  non-cash  items  related to that certain
         special incentive compensation award  program  which  will be funded if
         the Company's stock price reaches an average price per share of $20  or
         higher over 20 consecutive trading days after June 30, 1997, and before
         December 31, 1998, less treasury stock (if any), less goodwill, cost in
         excess  of  net  assets  acquired  and all other assets as are properly
         classified as intangible assets,  all  as  determined as to the Company
         and its Subsidiaries on a consolidated basis.

              "EBITDA" shall mean, as to the Company and its Subsidiaries  on  a
         consolidated  basis  and,  for each Rolling Period, the amount equal to
         net income of  the  Company  and  its  Subsidiaries,  less any non-cash
         income included in net income to the extent the applicable cash was not
         received at any time during such Rolling Period, plus,  to  the  extent
         deducted from net income, interest expense, depreciation, depletion and
         impairment,  amortization  of  leasehold and intangible, other non-cash
         expenses (including, but not limited to taxes (excluding Bolivian taxes
         paid in kind), plus,  but  without  duplication, to the extent deducted
         from net income, cash not to exceed $15,000,000 and all non-cash  items
         related  to  that  certain special incentive compensation award program
         which will be funded if  the  Company's  stock price reaches an average
         price per share of $20 or higher over 20 consecutive trading days after
         June 30, 1997, and before December 31, 1998; provided, that,  gains  or
         losses on the disposition of assets shall not be included in EBITDA.

              "Eligible  Inventory"  shall  mean, at any time, all inventory (as
         such term is defined in Section  9-109(4)  of the UCC) of the Inventory
         Borrowing Base Parties,  including,  without  limitation,  but  without
         duplication,   the  In  Transit  Inventory,  inventory  in  the  Tesoro
         Terminals, inventory at  the  KPL  Facility  (as  defined in clause (x)
         below), and  Consigned  Inventory  for  which  each  of  the  following
         statements  is accurate and complete (and the Company by including such
         inventory in any computation of  the  Borrowing Base shall be deemed to
         represent and warrant to the Administrative Agent,  each  Issuing  Bank
         and each Lender the accuracy and completeness of such statements):

              (a)  Said inventory is, and at all times will be, free  and  clear
         of all Liens (except for perfected Liens in favor of the Administrative
         Agent  and,  in  the  case  of  In  Transit  Inventory described in the
         definition of In Transit Inventory below, Liens securing the payment of
         tariffs owed by Tesoro Alaska to a common carrier

                                      -3-


         transporting  feedstocks  or   blendstocks   through  the  Trans-Alaska
         Pipeline System or  the  KPL  Facility,  as  defined  below),  and  the
         Administrative  Agent has a first priority, perfected security interest
         in such inventory;

              (b)  Said inventory does not include capitalized goods  which  are
         part of inventory of any Inventory Borrowing Base Party;

              (c)  Said   inventory   is   located  in  the  states  of  Alaska,
         California,  Texas,  Louisiana,  Oregon  or  Washington,  or  the Yukon
         territory or British  Columbia,  Canada,  or  to  the  extent  that  it
         qualifies as In Transit Inventory, is located in the territorial waters
         of   the  states  of  Alaska,  California,  Oregon,  Texas,  Louisiana,
         Washington or the Yukon territory  or British Columbia, Canada (and not
         in international waters); and

              (d)  Said inventory, excluding Consigned Inventory, is not  stored
         at any terminal other than a Tesoro Terminal.

    For  purposes  of this definition, "In Transit Inventory" shall mean, at any
    time, feedstocks, blendstocks or refined products, including asphalt, solely
    owned by an Inventory Borrowing Base Party that are in transit:

              (x)  to the Kenai Refinery  (i)  from  Pump  Station  No. 1 on the
         Trans-Alaska Pipeline System, including feedstocks  or  blendstocks  in
         storage  at  the Valdez Terminal in Valdez, Alaska, (ii) in a tanker or
         barge  located  within  Alaska,  California,  Washington  or  the Yukon
         territory or British Columbia, Canada or their  respective  territorial
         waters  (and  not in international waters) that has been time chartered
         by any Inventory Borrowing  Base  Party,  (iii)  in or on any pipeline,
         terminal, dock or storage tank of the KPL in the area  of  Cook  Inlet,
         Alaska  (the "KPL Facility"), or (iv) in the Cook Inlet pipeline system
         in the area of Cook  Inlet, Alaska, including feedstocks or blendstocks
         in storage at the Drift River Terminal in Drift River, Alaska;

              (y)  from the Kenai Refinery (i) in  a  tanker  or  barge  located
         within Alaska, California, Oregon, Washington or the Yukon territory or
         British  Columbia,  Canada  or their respective territorial waters (and
         not in  international  waters)  that  has  been  time  chartered by any
         Inventory Borrowing Base Party, (ii) in the Anchorage Pipeline owned by
         Tesoro Alaska Pipeline Company (formerly known as  the  Nikiski  Alaska
         Pipeline),  or  (iii)  in  the  KPL  Facility (as defined in Clause (x)
         above); or

              (z)  between  Alaska,  California,  Washington,  Texas,  Louisiana
         Oregon or the Yukon territory or  British Columbia, Canada and in their
         respective territorial waters (and not in international waters) and  is
         inventory  in  which  the Administrative Agent has been granted a first
         priority perfected Lien which is in effect at such time.

                                      -4-

         (c)  Section 1.01 of the Credit Agreement is hereby further amended and
    supplemented by adding  the  following  new definitions where alphabetically
    appropriate, which reads in their entirety as follows:

              "Consigned Inventory" shall mean inventory owned by  an  Inventory
         Borrowing  Base  Party  being  held  in  storage tanks of a third party
         pursuant to a consignment  arrangement between such Inventory Borrowing
         Base Party and such third party, but  not  commingled  with  any  other
         inventory  or goods of such third party or other Persons, and for which
         such Inventory Borrowing Base Party  has complied with the requirements
         of the Uniform Commercial Code, including Section 9.114  thereof,  such
         that  such  Inventory  Borrowing  Base  Party will have priority over a
         secured party who is or becomes a creditor of such third party.

              "Third Amendment"  shall  mean  that  certain  Third  Amendment to
         Amended and Restated Credit Agreement dated as of September  15,  1997,
         by  and  among the Company, the Administrative Agent, the Documentation
         Agent, the Issuing Bank and the Lenders.

    Section 2.02   Amendments to  Article  II.   Section  2.20(a)  of the Credit
Agreement is hereby amended by  replacing  the  last  sentence  thereof  in  its
entirety with the following sentence:

    "During  the period from and after the effective date of the Third Amendment
    until the next Redetermination  Date  occurring  after October, 1997, unless
    redetermined pursuant to any unscheduled redeterminations, the amount of the
    E&P Borrowing Base shall be $56,000,000."

                                      -5-

    Section 2.03   Amendments to  Article  V.  Section  5.15(h)  of  the  Credit
Agreement is hereby amended in its entirety to read as follows:

         "(h)  Quarterly  Borrowing  Base  Reports.  As soon as available and in
    any event by the 105th day after  the  end of the fourth calendar quarter of
    each year and the 60th day after the end of each of the first three calendar
    quarters of each year of the Company,  a  quarterly  Borrowing  Base  Report
    dated  and  reflecting  amounts  as of the last day of such calendar year or
    quarter, as the case may  be,  which  have  been reconciled to the financial
    statements delivered pursuant to Subsection 5.15(a) or (b), as the case  may
    be, and in the case of the fourth calendar quarter, as soon as available and
    in any event by the 60th day after the end of the fourth calendar quarter of
    each  year,  a preliminary Borrowing Base Report for the prior four calendar
    quarters  not  reconciled  to  such  financial  statements,  upon  which the
    Borrowing Base will be determined for the interim period  until  receipt  of
    the reconciled Borrowing Base Report for such period; provided, however, the
    Majority  Lenders  may, at any time, require up to four additional Borrowing
    Base Reports per calender year and  the  Company may, at any time, submit up
    to four additional Borrowing Base Reports per calender year, in addition  to
    the  four  additional  Borrowing  Base  Reports  required  by  the  Majority
    Lenders."

    Section 2.04   Amendments to Article VI.

    (a)  Section  6.01 of the Credit Agreement is hereby amended in its entirety
to read as follows:

         "Section 6.01  Consolidated  Tangible  Net  Worth.  Permit Consolidated
    Tangible Net Worth as of the end of the calendar quarter  to  be  less  than
    $189,950,000  plus  75%  of the Company's consolidated net income aggregated
    for each of the  calendar  quarters  from  and  after  July 1, 1997 in which
    consolidated net income is positive; provided if at  any  time  the  Company
    issues  equity  securities  of any kind, such minimum amount of Consolidated
    Tangible Net Worth shall be permanently  increased by an amount equal to 75%
    of the net cash proceeds from the issuance of such equity securities."

    (b)  Section 6.02 of the Credit Agreement is hereby amended in its  entirety
to read as follows:

         "Section 6.02  Consolidated Current  Ratio.   Permit  the  ratio of (i)
    consolidated  current  assets  to  (ii)  consolidated  current   liabilities
    (excluding  current  maturities  of the Notes) to be less than 1.3 to 1.0 at
    any time.  As used in this  Section 6.02 "consolidated current assets" shall
    mean assets which would, in accordance with GAAP,  be  included  as  current
    assets  on  a consolidated balance sheet of the Company and its Subsidiaries
    and "consolidated current liabilities"  shall  mean liabilities which would,
    in  accordance  with  GAAP,  be  included  as  current  liabilities   on   a
    consolidated

                                      -6-


    balance  sheet  of  the Company and its Subsidiaries; provided, however, for
    the sole purpose of calculating such ratio, consolidated current liabilities
    shall not include accrued amounts  related to that certain special incentive
    compensation award program which will be funded if the Company's stock price
    reaches an average price per share of $20  or  higher  over  20  consecutive
    trading  days  after  June 30, 1997, and before December 31, 1998, except to
    the extent that the cash component of such accrual exceeds $15,000,000, such
    excess shall be included in consolidated current liabilities."

    (c)  Section 6.03 of the Credit Agreement is hereby amended by replacing the
second sentence thereof in its entirety to read as follows:

    "As used in this Section 6.03, "cash flow coverage ratio" shall mean, as  to
    the  Company,  and for the Rolling Period ending on such Quarterly Date, the
    ratio of (i) the sum of (A) Cash Flow of the Company and its Subsidiaries on
    a consolidated basis, plus (B) the  difference between (x) the lesser of the
    Aggregate Revolving Credit Commitments or the Borrowing Base on the last day
    of the applicable Rolling Period and (y) the outstanding principal amount of
    the Revolving Credit Loans on the first day of the last calendar quarter  of
    such  Rolling  Period,  plus  (C)  interest  expense  of the Company and its
    Subsidiaries on a  consolidated  basis  to  (ii)  the  sum  of (A) regularly
    scheduled principal payments of Funded Indebtedness paid in cash,  plus  (B)
    cash  interest expense of the Company and its Subsidiaries on a consolidated
    basis, plus (C) capital expenditures by  the Company and its Subsidiaries on
    a consolidated basis, excluding capital expenditures  made  by  way  of  (x)
    exchanges  of  equity  and (y) loans provided by third parties to the extent
    not prohibited by Section 6.05, plus (D) cash dividends actually paid by the
    Company and its Subsidiaries on a consolidated basis."

    (d)  Section 6.05  of  the  Credit  Agreement  is  hereby  amended by adding
thereto a new Subsection (o) as follows:

         "(o)  Unsecured letters of credit (other than Letters of Credit) not to
    exceed $25,000,000 in the aggregate;  provided,  however,  if  an  unsecured
    letter  of  credit  is  issued  for  the benefit of the State of Alaska, all
    unsecured letters of credit (other than  Letters of Credit) shall not exceed
    $40,000,000 in the aggregate."

    (e)  Clause (v) of Section 6.08 is hereby amended in its entirety to read as
follows:

         "(v)  in an aggregate amount not to exceed $10,000,000, repurchase  the
    common  stock  issued by the Company from (A) shareholders owning 100 shares
    or less pursuant to an oddlot  buy  back  program and (B) the open market or
    private sales for employee benefit or compensation plans, and"

                                      -7-

                            ARTICLE III.  CONDITIONS

    The enforceability of this Third Amendment against the Administrative Agent,
the Documentation Agent, the Issuing Bank and the  Lenders  is  subject  to  the
satisfaction of the following conditions precedent:

    Section 3.01   Loan Documents.  The Administrative Agent shall have received
multiple  original  counterparts,  as  requested by the Administrative Agent, of
this Third Amendment executed and delivered  by a duly authorized officer of the
Company, each of the Guarantors, the  Administrative  Agent,  the  Documentation
Agent, each Issuing Bank and each Lender.

    Section 3.02   Corporate Proceedings  of  Loan  Parties.  The Administrative
Agent shall have received multiple copies, as requested  by  the  Administrative
Agent,  of the resolutions, in form and substance reasonably satisfactory to the
Administrative Agent,  of  the  Boards  of  Directors  of  the  Company  and the
Guarantors, authorizing the execution, delivery and performance  of  this  Third
Amendment,  each  such  copy  being  attached  to an original certificate of the
Secretary or  an  Assistant  Secretary  of  the  Company  or  the Guarantors, as
applicable, dated as of the Effective Date, certifying (i) that the  resolutions
attached  thereto  are  true,  correct  and  complete copies of resolutions duly
adopted by written consents or at meetings of the Boards of Directors, (ii) that
such  resolutions  constitute  all  resolutions  adopted  with  respect  to  the
transactions contemplated hereby,  (iii)  that  such  resolutions  have not been
amended, modified, revoked or rescinded as of the Effective Date, (iv) that  the
respective  articles  of  incorporation  and  bylaws  of  the  Company  and  the
Guarantors  have not been amended or otherwise modified since the effective date
of the Credit Agreement, except pursuant to any amendments attached thereto, and
(v) as to the incumbency and  signature  of  the  officers of the Company or the
Guarantors, as applicable, executing this Third Amendment.

    Section 3.03   Representations and  Warranties.   Except  as affected by the
transactions contemplated in the Credit Agreement and this Third Amendment, each
of the representations and warranties made by the Company and the Guarantors  in
or pursuant to the Financing Documents, including the Credit Agreement, shall be
true  and  correct in all material respects as of the Effective Date, as if made
on and as of such date.

    Section 3.04   No  Default.   No  Default  or  Event  of  Default shall have
occurred and be continuing as of the Effective Date.

    Section  3.05   Security  Instruments.   All  of  the  Security  Instruments
(subject to any partial releases thereof) shall be in full force and effect  and
provide  to the Administrative Agent the security intended thereby to secure the
Indebtedness.

    Section 3.06   Other Instruments or  Documents.  The Administrative Agent or
any Lender or counsel to the  Administrative  Agent  shall  receive  such  other
instruments or documents as they may reasonably request.

                                      -8-

                           ARTICLE IV.  MISCELLANEOUS

    Section  4.01   Adoption, Ratification and Confirmation of Credit Agreement.
Each of the Company, the Guarantors, the Administrative Agent, the Documentation
Agent, the Issuing Bank and  the  Lenders  does hereby adopt, ratify and confirm
the Credit Agreement, as amended hereby, and acknowledges and  agrees  that  the
Credit Agreement, as amended hereby, is and remains in full force and effect.

    Section  4.02   Ratification  and  Affirmation  of  Guaranty.   Each  of the
Guarantors hereby expressly (i) acknowledges  the terms of this Third Amendment,
(ii) ratifies and affirms its obligations under the Second Amended and  Restated
Guaranty  Agreement dated as of January 28, 1997, in favor of the Administrative
Agent, the Documentation Agent, the  Issuing  Bank  and the Lenders, as amended,
supplemented or otherwise modified ("Guaranty Agreement"),  (iii)  acknowledges,
renews  and  extends  its  continued  liability under the Guaranty Agreement and
agrees that such Guaranty Agreement remains  in  full force and effect; and (iv)
guarantees to the Administrative Agent, the Documentation  Agent,  each  Issuing
Bank  and  each Lender to promptly pay when due all amounts owing or to be owing
by it under the Guaranty Agreement pursuant to the terms and conditions thereof.

    Section  4.03   Successors  and  Assigns.   This  Third  Amendment  shall be
binding upon and inure to the benefit of the parties hereto and their respective
successors and assigns permitted pursuant to the Credit Agreement.

    Section 4.04   Counterparts.  This Third Amendment may be executed by one or
more of the parties hereto in any number of separate counterparts,  and  all  of
such  counterparts taken together shall be deemed to constitute one and the same
instrument and shall be enforceable as  of the Effective Date upon the execution
of one  or  more  counterparts  hereof  by  the  Company,  the  Guarantors,  the
Administrative Agent, the Documentation Agent, the Issuing Bank and the Lenders.
In  this  regard,  each of the parties hereto acknowledges that a counterpart of
this Third Amendment containing a  set of counterpart execution pages reflecting
the execution of each party hereto shall be sufficient to reflect the  execution
of  this Third Amendment by each necessary party hereto and shall constitute one
instrument.

    Section 4.05   Number and Gender.   Whenever the context requires, reference
herein made to the single number shall be understood to include the plural;  and
likewise,  the  plural  shall  be  understood  to  include  the singular.  Words
denoting sex shall be construed  to  include the masculine, feminine and neuter,
when such construction  is  appropriate;  and  specific  enumeration  shall  not
exclude  the general but shall be construed as cumulative.  Definitions of terms
defined in the singular or plural  shall  be equally applicable to the plural or
singular, as the case may be, unless otherwise indicated.

    Section  4.06   Entire  Agreement.   This  Third  Amendment  constitutes the
entire agreement among the parties hereto with respect to  the  subject  hereof.
All prior understandings, statements and

                                      -9-

agreements,  whether  written  or  oral,  relating  to  the  subject  hereof are
superseded by this Third Amendment.

    Section 4.07   Invalidity.  In the  event  that  any  one  or  more  of  the
provisions  contained  in  this  Third  Amendment  shall  for any reason be held
invalid, illegal or unenforceable in any respect, such invalidity, illegality or
unenforceability shall not affect any other provision of this Third Amendment.

    Section 4.08   Titles of Articles, Sections  and Subsections.  All titles or
headings to Articles, Sections, subsections or other  divisions  of  this  Third
Amendment  or  the  exhibits hereto, if any, are only for the convenience of the
parties and shall not be construed to have any effect or meaning with respect to
the other content of  such  Articles,  Sections, subsections, other divisions or
exhibits, such other content  being  controlling  as  the  agreement  among  the
parties hereto.

    Section  4.09   Governing  Law.  This  Third  Amendment  and  the rights and
obligations of the parties  hereunder  and  under  the Credit Agreement shall be
governed by and construed in accordance with the laws of the State of Texas  and
the United States of America.

        THIS  THIRD  AMENDMENT,  THE  CREDIT  AGREEMENT,  AS  AMENDED  AND
        SUPPLEMENTED  HEREBY, THE NOTES, AND THE OTHER FINANCING DOCUMENTS
        CONSTITUTE  A  WRITTEN  LOAN  AGREEMENT  AND  REPRESENT  THE FINAL
        AGREEMENT BETWEEN THE PARTIES  AND  MAY  NOT  BE  CONTRADICTED  BY
        EVIDENCE  OF PRIOR, CONTEMPORANEOUS, OR SUBSEQUENT ORAL AGREEMENTS
        OF THE PARTIES.

        THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES.



                       [SIGNATURES BEGIN NEXT PAGE]

                                   -10-

    IN  WITNESS  WHEREOF,  the  parties  hereto  have  caused  this  Third
Amendment to be  duly  executed  and  delivered  by  their proper and duly
authorized officers as of the Effective Date.

COMPANY:                     TESORO PETROLEUM CORPORATION


                             By:  /s/ G. A. Wright
                             Name:    G.A. Wright
                             Title:   Vice President and Treasurer


GUARANTORS:                  TESORO ALASKA PETROLEUM COMPANY
                             TESORO EXPLORATION AND PRODUCTION
                             COMPANY
                             TESORO PETROLEUM COMPANIES, INC.
                             DIGICOMP, INC.
                             TESORO TECHNOLOGY PARTNERS COMPANY
                             INTERIOR FUELS COMPANY
                             TESORO ALASKA PIPELINE COMPANY
                             TESORO NORTHSTORE COMPANY
                             TESORO REFINING, MARKETING & SUPPLY
                             COMPANY
                             TESORO NATURAL GAS COMPANY
                             TESORO BOLIVIA PETROLEUM COMPANY
                             TESORO VOSTOK COMPANY
                             KENAI PIPE LINE COMPANY
                             TESORO MARINE SERVICES COMPANY
                             TESORO COASTWIDE SERVICES COMPANY
                             COASTWIDE MARINE SERVICES, INC.


                             By:  /s/ G. A. Wright
                             Name:    G.A. Wright
                             Title:   Vice President and Treasurer

                             TESORO GAS RESOURCES COMPANY, INC.
                             TESORO FINANCIAL SERVICES HOLDING
                             COMPANY


                             By:  /s/ Jeffrey B. Fabian
                             Name:    Jeffrey B. Fabian
                             Title:   President

                                   S-1



                             VICTORY FINANCE COMPANY


                             By:  /s/ David W. Dupert
                             Name:    David W. Dupert
                             Title:   President


                             TESORO E&P COMPANY, L.P.

                             By:  TESORO EXPLORATION AND
                                  PRODUCTION COMPANY, as its general
                                  partner


                             By:  /s/ G.A. Wright
                             Name:    G.A. Wright
                             Title:   Vice President and Treasurer

ADMINISTRATIVE AGENT,
ISSUING BANK AND LENDER:     BANQUE PARIBAS, individually, as an Issuing
                             Bank and as Administrative Agent


                             By:  /s/ Brian Malone
                             Name:    Brian Malone
                             Title:   Vice President


                             By:  /s/ Barton D. Schouest
                             Name:    Barton D. Schouest
                             Title:   Managing Director


DOCUMENTATION AGENT,
ISSUING BANK AND LENDER:     THE BANK OF NOVA SCOTIA


                             By:  /s/ F.C.H. Ashby
                             Name:    F.C.H. Ashby
                             Title:   Senior Manager
                                      Loan Operations

                                      S-2


LENDERS:                     BANK OF SCOTLAND


                             By:  /s/ Annie Chin Tat
                             Name:    Annie Chin Tat
                             Title:   Vice President


                             CHRISTIANIA BANK OG KREDITKASSE


                             By:  /s/ William S. Phillips
                             Name:    William S. Phillips
                             Title:   Vice President


                             By:  /s/ Peter M. Dodge
                             Name:    Peter M. Dodge
                             Title:   First Vice President


                             THE FIRST NATIONAL BANK OF CHICAGO,
                             Individually and as an Issuing Bank


                             By:  /s/ Dixon P. Schultz
                             Name:    Dixon P. Schultz
                             Title:   Vice President


                             FIRST UNION NATIONAL BANK OF NORTH
                             CAROLINA


                             By:  /s/ Michael J. Kolosowsky
                             Name:    Michael J. Kolosowsky
                             Title:   Vice President

                                      S-3


                             NATIONAL BANK OF CANADA


                             By:  /s/ William Handley
                             Name:    William Handley
                             Title:   Vice President


                             By:  /s/ Doug Clark
                             Name:    Doug Clark
                             Title:   Vice President


                             THE FROST NATIONAL BANK


                             By:  /s/ Jim Crosby
                             Name:    Jim Crosby
                             Title:   Senior Vice President


                             DEN NORSKE BANK ASA


                             By:  /s/ Bryon L. Cooley
                             Name:    Bryon L. Cooley
                             Title:   Senior Vice President


                             By:  /s/ William V. Moyer
                             Name:    William V. Moyer
                             Title:   First Vice President

                                      S-4