EXHIBIT 10.38

           FIFTH AMENDMENT TO AMENDED AND RESTATED CREDIT AGREEMENT
                [Letter of Credit and Hedged Inventory Facility]

     FIFTH AMENDMENT TO AMENDED AND RESTATED CREDIT AGREEMENT [Letter of Credit
and Hedged Inventory Facility] (this "Amendment") dated as of the 31st day of
January, 2002, by and among PLAINS MARKETING, L.P. ("Borrower"), ALL AMERICAN
PIPELINE, L.P. and PLAINS ALL AMERICAN PIPELINE, L.P., as guarantors, FLEET
NATIONAL BANK, as Administrative Agent, and the Lenders party hereto.

                              W I T N E S S E T H:

     WHEREAS, Borrower, All American, Plains MLP, Administrative Agent and
Lenders entered into that certain Amended and Restated Credit Agreement [Letter
of Credit and Hedged Inventory Facility] dated as of May 4, 2001 (as amended,
supplemented, or restated to the date hereof, the "Original Agreement") for the
purposes and consideration therein expressed, pursuant to which Lenders became
obligated to make and made loans to Borrower as therein provided; and

     WHEREAS, Borrower, All American, Plains MLP, Administrative Agent and
Lenders desire to amend the Original Agreement for the purposes described
herein;

     NOW, THEREFORE, in consideration of the premises and the mutual covenants
and agreements contained herein and in the Original Agreement, in consideration
of the loans that may hereafter be made by Lenders to Borrower, and for other
good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties hereto do hereby agree as follows:

                    ARTICLE I. -- Definitions and References

     (S) 1.1.  Terms Defined in the Original Agreement.  Unless the context
otherwise requires or unless otherwise expressly defined herein, the terms
defined in the Original Agreement shall have the same meanings whenever used in
this Amendment.

     (S) 1.2.  Other Defined Terms.  Unless the context otherwise requires, the
following terms when used in this Amendment shall have the meanings assigned to
them in this (S) 1.2.

          "Amendment" means this Fifth Amendment to Amended and Restated Credit
     Agreement [Letter of Credit and Hedged Inventory Facility].

          "Amendment Documents" means this Amendment.

          "Credit Agreement" means the Original Agreement as amended hereby.

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                           ARTICLE II. -- Amendments

     (S) 2.1.  Definitions.  The definition of "Consolidated Net Worth" set
forth in Section 1.1 of the Original Agreement is hereby amended in its entirety
to read as follows:

          "Consolidated Net Worth" means the remainder of all Consolidated
     assets, as determined in accordance with GAAP, of Plains MLP and its
     Subsidiaries minus the sum of (i) Plains MLP's Consolidated liabilities, as
     determined in accordance with GAAP, and (ii) the book value of any equity
     interests in any of Plains MLP's Subsidiaries which equity interests are
     owned by a Person other than Plains MLP or a Wholly Owned Subsidiary of
     Plains MLP.  The effect of any increase or decrease of net worth in any
     period as a result of items of income or loss not reflected in the
     determination of net income but reflected in the determination of
     comprehensive income (to the extent provided under GAAP as in effect on the
     date hereof) shall be excluded in determining Consolidated Net Worth.

     The definition of "Permitted Acquisitions" set forth in Section 1.1 of the
Original Agreement is hereby amended in its entirety to read as follows:

          "Permitted Acquisitions" means (A) the acquisition of the capital
     stock or other equity interest in a Person whose business, assets and
     operations consist of Petroleum Products and/or gas marketing, gathering,
     transportation, storage, terminaling and pipeline operation; provided, if a
     Restricted Person acquires less than all of the capital stock or other
     equity interest acquired, such business, assets and operations shall
     consist of transportation, storage, terminaling and/or pipeline operations
     and associated gathering assets, or (B) the acquisition of all or a portion
     of a line of business or the business, assets or operations of a Person
     (whether in a single transaction or a series of related transactions)
     consisting of Petroleum Products and/or gas marketing, gathering,
     transportation, storage, terminaling and pipeline operation; provided, if a
     Restricted Person acquires less than all of the ownership interest of the
     business, assets or operations acquired, such business, assets and
     operations shall consist of transportation, storage, terminaling and/or
     pipeline operations and associated gathering assets; provided, further, in
     each case under clauses (A) and (B) above (i) prior to and after giving
     effect to such acquisition no Default or Event of Default shall have
     occurred and be continuing; and (ii) all representations and warranties
     shall be true and correct as if restated immediately following the
     consummation of such acquisition, except to the extent that any such
     representation or warranty was made as of a specific date or updated,
     modified or supplemented as of a subsequent date with the consent of
     Majority Lenders.

     The definition of "Permitted Investments" set forth in Section 1.1 of the
Original Agreement is hereby amended in its entirety to read as follows:

     "Permitted Investments" means:

          (a) Cash Equivalents,

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          (b) Investments described in the Disclosure Schedule,

          (c) Investments by Plains MLP or any of its Subsidiaries in (1) any
     Wholly Owned Subsidiary of Plains MLP which is (or substantially
     contemporaneously with such Investment will become) Borrower or a
     Guarantor, or (2) any business, asset or operation which is (or
     contemporaneously with such Investment becomes) wholly-owned by Plains MLP
     or any Wholly Owned Subsidiary of Plains MLP which is (or substantially
     contemporaneously with such Investment will become) Borrower or a
     Guarantor,

          (d) Investments in publicly traded units of master limited
     partnerships whose dividends are "qualifying income" as such term is
     defined in Section 7704 of the Code (provided, the amount of any such
     Investments under this clause (d) minus any amounts received on such
     Investments (excluding dividends thereon) shall not at any time exceed the
     Dollar Equivalent of $5,000,000),

          (e) Permitted Acquisitions,

          (f) Investments by Plains MLP or any of its Subsidiaries in (i) any
     Person owning transportation, terminaling, storage and/or pipeline assets
     and associated gathering assets in which Plains MLP or any Wholly Owned
     Subsidiary of Plains MLP owns, directly or indirectly, less than all of the
     capital stock or other equity interest, or (ii) transportation,
     terminaling, storage and/or pipeline assets and associated gathering assets
     in which Plains MLP or any Wholly Owned Subsidiary of Plains MLP owns,
     directly or indirectly, less than all of the ownership interest therein,
     such Investments under clauses (i) and (ii) above in an aggregate amount
     not to exceed at any one time outstanding (A) the Dollar Equivalent of
     $35,000,000 minus (B) any outstanding Indebtedness under Section
     7.1(f)(ii),

          (g) subject to Section 7.18(d), Investments directly or indirectly by
     Restricted Persons in Unrestricted Subsidiaries (i) consisting of Qualified
     Equity Proceeds, and (ii) Investments other than Qualified Equity Proceeds
     in an aggregate amount not to exceed, at any one time outstanding, the
     Dollar Equivalent of $100,000,000; for calculation purposes hereof: (1) any
     return on investment from any Unrestricted Subsidiary shall reduce the
     aggregate outstanding Investments subject to the limitation set forth in
     clause (ii) by an amount equal to the Non-Equity Investment to Total
     Investment Ratio times such investment return (e.g., if an Unrestricted
     Subsidiary is capitalized with $100,000,000, $40,000,000 of which is
     Qualified Equity Proceeds and $60,000,000 of which is subject to the
     limitation set forth in clause (ii), and $10,000,000 is returned by such
     Unrestricted Subsidiary, the $60,000,000 subject to clause (ii) would be
     reduced by 6/10ths or $6,000,000 of such return); (2) in the event any
     Unrestricted Subsidiary is designated a Restricted Person pursuant to
     Section 7.18, executes and delivers Security Documents pursuant to Section
     6.14 and becomes a Guarantor pursuant to Section 6.17, the aggregate
     outstanding Investments subject to the limitation set forth in clause (ii)
     shall be reduced by the lesser of (i) Investments in such redesignated
     Subsidiary not constituting Qualified Equity Proceeds and (ii) the Non-
     Equity Investment to Total Investment Ratio times the fair market value of
     such redesignated Subsidiary as of the

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     date of such designation as a Restricted Person, as reasonably determined
     by Borrower; as used herein, "Qualified Equity Proceeds" means proceeds of
     private or public offerings of equity securities by Restricted Persons
     after January 31, 2002 that within three months after the receipt thereof
     are (1) contributed as capital to one or more specified Unrestricted
     Subsidiaries, or (2) expressly designated as funds to be contributed as
     capital to one or more specified Unrestricted Subsidiaries, and are
     contributed pursuant to such designation within six months after such
     designation, and "Non-Equity Investment to Total Investment Ratio" means
     with respect to any Unrestricted Subsidiary, the ratio of (I) Investments
     in such Unrestricted Subsidiary not constituting Qualified Equity Proceeds
     to (II) all Investments in such Unrestricted Subsidiary, and

          (h) other Investments, excluding Investments in Unrestricted
     Subsidiaries, such other Investments not to exceed in the aggregate in
     respect of all Restricted Persons the Dollar Equivalent of $10,000,000.

     The definition of "Restricted Person" set forth in Section 1.1 of the
Original Agreement is hereby amended in its entirety to read as follows:

          "Restricted Person" means any of Plains MLP and each Subsidiary of
     Plains MLP, including but not limited to Borrower, All American, and each
     Subsidiary of Borrower and All American, but excluding, for the avoidance
     of doubt, Unrestricted Subsidiaries.

     The following definition of "Restriction Exception" is hereby added to
Section 1.1 of the Original Agreement in appropriate alphabetical order:

          "Restriction Exception" means (i) any instrument governing
     Indebtedness or equity interests, or any other agreement relating to any
     property or assets, of a Person whose capital stock or other equity
     interests are partially acquired by a Restricted Person pursuant to a
     Permitted Acquisition, as such instrument or agreement is in effect at the
     time of such acquisition (except with respect to Indebtedness incurred in
     connection with, or in contemplation of, such acquisition), which is not
     applicable to any Restricted Person, or the property or assets of any
     Restricted Person, other than the partially-acquired Person, or the
     property or assets of such partially-acquired Person or such partially-
     acquired Person's Subsidiaries; provided that in the case of Indebtedness,
     such Indebtedness is permitted hereunder, or (ii) provisions with respect
     to the disposition or distribution of assets in joint venture agreements or
     other similar agreements entered into in the ordinary course of business.

     The definition of "Subsidiary" set forth in Section 1.1 of the Original
Agreement is hereby amended in its entirety to read as follows:

          "Subsidiary" means, with respect to any Person, any corporation,
     association, partnership, limited liability company, joint venture, or
     other business or corporate entity, enterprise or organization which is
     directly or indirectly (through one or more intermediaries) controlled or
     owned more than fifty percent by such Person; provided,

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     however, that no Unrestricted Subsidiary shall be deemed a "Subsidiary" of
     Plains MLP or any Subsidiary of Plains MLP for purposes of any Loan
     Document except as provided in Section 7.18.

     The following definition of "Unrestricted Subsidiary" is hereby added to
Section 1.1 of the Original Agreement in appropriate alphabetical order:

          "Unrestricted Subsidiary" shall have the meaning given it in Section
7.18.

     (S) 2.2.  Agreement to Deliver Security Documents.   Section 6.14 of the
Original Agreement is hereby amended in its entirety to read as follows:

          Section 6.14.  Agreement to Deliver Security Documents.  Restricted
     Persons will deliver, and will cause each Person, other than Unrestricted
     Subsidiaries, in which it owns any capital stock or other equity interest
     (other than interests described in clause (d) of the definition of
     "Permitted Investments") to deliver, to further secure the Obligations
     whenever requested by Administrative Agent in its sole and absolute
     discretion, deeds of trust, mortgages, chattel mortgages, security
     agreements, financing statements and other Security Documents in form and
     substance satisfactory to Administrative Agent for the purpose of granting,
     confirming, and perfecting first and prior liens or security interests in
     any real or personal property now owned or hereafter acquired by any
     Restricted Person; provided, with respect to any such property for which
     the consent or approval of third parties is required for the delivery of
     such Security Documents, Restricted Persons shall not be required to
     deliver, or to cause such Person to deliver, such Security Documents with
     respect to such property, but shall use their commercially reasonable best
     efforts, as determined by Administrative Agent, to deliver, or to cause
     such Person to deliver, such Security Documents with respect to such
     property.  Without limiting the foregoing, each  Restricted Person shall be
     required to grant a Lien in favor of Administrative Agent for the benefit
     of Lenders encumbering such Restricted Person's ownership interest in any
     Unrestricted Subsidiary; provided, no Security Document granting any such
     Lien on such ownership interest in such Unrestricted Subsidiary shall
     restrict or limit the ownership or operation of such Unrestricted
     Subsidiary except as otherwise restricted or limited herein.

     (S) 2.3.  Guaranties of Subsidiaries.  The first sentence of Section 6.17
of the Original Agreement is hereby amended in its entirety to read as follows:

     Each Subsidiary of Plains MLP, and any other Person, other than
     Unrestricted Subsidiaries, in which any Subsidiary of Plains MLP owns any
     capital stock or other equity interest (other than interests described in
     clause (d) of the definition of "Permitted Investments"), now existing or
     created, acquired or coming into existence after the date hereof shall,
     promptly upon request by Administrative Agent, execute and deliver to
     Administrative Agent an absolute and unconditional guaranty of the timely
     repayment of the Obligations and the due and punctual performance of the
     obligations of Borrower hereunder (in each case for which such Subsidiary
     is not a borrower, account party or similar primary and direct obligor),
     which guaranty shall be satisfactory to Administrative Agent in form and
     substance; provided, with respect to any such Subsidiary or other Person
     that is not a Wholly Owned Subsidiary of Plains MLP, for which consent or

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     approval of third parties is required for the delivery of such guaranty,
     such Subsidiary or such other Person shall not be required to deliver such
     guaranty, but shall use its commercially reasonable best efforts, as
     determined by Administrative Agent, to deliver such guaranty.
     Notwithstanding any provision contained herein, in no event shall any
     Unrestricted Subsidiary be required to execute and deliver any guaranty
     for, or in respect of, the Obligations, or any part thereof.

     (S) 2.4.  Limitation on Indebtedness.  Section 7.1(f) of the Original
Agreement is hereby amended in its entirety to read as follows:

          (f) guaranties by Plains MLP, Borrower or any Guarantor of trade
     payables incurred and paid in the ordinary course of business on ordinary
     trade terms by (A) any Restricted Person, or (B) any other Person in which
     Plains MLP or any Wholly Owned Subsidiary of Plains MLP owns less than all
     of such Person's capital stock or other equity interest; provided, that the
     outstanding trade payables amount guaranteed at any time under this clause
     (B) shall not exceed (1) $50,000,000 minus (2) any outstanding Investments
     under clause (f) of the definition of Permitted Investments.

     (S) 2.5.  Limitation on Liens.  The reference to "Section 7.1(g)" set forth
in Section 7.2(i) of the Original Agreement is hereby amended to refer instead
to "Section 7.1(h)".

     (S) 2.6.  Limitations on Mergers; Issuances of Securities.  The second,
third and fourth sentences of Section 7.4 are hereby amended in their entirety
to read as follows:

     Any Person, other than Borrower, that is a Subsidiary of a Restricted
     Person may, however, be merged into or consolidated with (i) another
     Subsidiary of such Restricted Person, so long as (A) neither is a
     Guarantor, or (B) a Guarantor is the surviving business entity, (ii) such
     Restricted Person, so long as such Restricted Person is the surviving
     business entity, or (iii) any other Person pursuant or incidental to, or in
     connection with, any contemporaneous or substantially contemporaneous
     Permitted Acquisition, provided that such merging or consolidating
     Subsidiary (1) is not Borrower, Guarantor or a Wholly Owned Subsidiary of
     Plains MLP, other than a Wholly Owned Subsidiary that was formed, acquired
     or created solely for purposes of such acquisition or otherwise conducted
     no operations and owned no assets, other than of an inconsequential amount
     and (2) does not own any Collateral.  Plains MLP will not issue any
     securities other than (i) limited partnership interests and any options or
     warrants giving the holders thereof only the right to acquire such
     interests, (ii) general partnership interests to General Partner, and (iii)
     debt securities permitted by Section 7.1(g).  No Subsidiary of Plains MLP
     will issue any additional shares of its capital stock, partnership
     interests or other securities or any options, warrants or other rights to
     acquire such additional shares, partnership interests or other securities,
     except a Subsidiary of a Restricted Person may issue additional shares,
     partnership interests or other securities (i) to Persons so long as such
     Restricted Person's and Plains MLP's aggregate ownership in such issuing
     Subsidiary is not diminished after giving effect thereto, or (ii) to any
     other Person pursuant or incidental to, or in connection with, any
     contemporaneous or substantially contemporaneous Permitted Acquisition,
     provided that such issuing Subsidiary (1) is not

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     Borrower, Guarantor or a Wholly Owned Subsidiary of Plains MLP, other than
     a Wholly Owned Subsidiary that was formed, acquired or created solely for
     purposes of such acquisition or otherwise conducted no operations and owned
     no assets, other than of an inconsequential amount and (2) does not own any
     Collateral.

     The fifth sentence of Section 7.4 is hereby deleted in its entirety.

     (S) 2.7.  Limitation on Sales of Property.  Section 7.5 of the Original
Agreement is hereby amended by deleting "and" at the end of clause (c), adding
an amended clause (d) as follows:

          (d) in exchange for other property; provided that (i) such exchange is
     for fair consideration, (ii) the property to be acquired in such exchange
     constitutes a Permitted Acquisition, (iii) the fair market value of such
     property being exchanged is not in the aggregate in excess of the Dollar
     Equivalent of $25,000,000 in any Fiscal Year, as reasonably determined by
     Borrower (any such determination in excess of $10,000,000 being determined
     in good faith by certified resolution of the board of directors of the
     corporate general partner of Borrower and subject to, at Administrative
     Agent's reasonable request, confirmation by appraisal), and (iv) such
     exchange will not materially impair or diminish the value of the Collateral
     or any Restricted Person's financial condition, business or operations; and

and redesignating existing clause "(d)" as clause "(e)".

     The first sentence following such new clause (d) and redesignated clause
(e) of Section 7.5 is hereby amended in its entirety to read as follows:

     No Restricted Person will sell, transfer or otherwise dispose of capital
     stock of or interest in any of its Subsidiaries except (i) to Plains MLP or
     a Wholly Owned Subsidiary of Plains MLP or (ii) to any other Person
     pursuant or incidental to, or in connection with, any contemporaneous or
     substantially contemporaneous Permitted Acquisition, provided that such
     Subsidiary whose capital stock or interests are being transferred (1) is
     not Borrower, Guarantor or a Wholly Owned Subsidiary of Plains MLP, other
     than a Wholly Owned Subsidiary that was formed, acquired or created solely
     for purposes of such acquisition or otherwise conducted no operations and
     owned no assets, other than of an inconsequential amount and (2) does not
     own any Collateral; provided, in the event any limited partner interests
     issued by Plains Marketing Canada, L.P. to CanPet Energy Group (USA), Inc.
     or CanPet Energy Group Inc. pursuant to Section 7.4 are exchanged for units
     issued by Plains MLP, Lenders hereby consent to the contribution by Plains
     MLP to Borrower of any and all such partnership interests.

     The reference to "clause (a) or (c)" in the last sentence of Section 7.5 is
hereby amended to refer instead to "clauses (a), (c) or (d)".

     (S) 2.8.  Limitation on Dividends and Redemptions.  The first sentence of
Section 7.6 of the Original Agreement is hereby amended in its entirety to read
as follows:

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          Section 7.6  Limitation on Dividends and Redemptions.  No Restricted
     Person will declare or pay any dividends on, or make any other distribution
     in respect of, any class of its capital stock or any partnership, limited
     liability company or other interest in it, nor will any Restricted Person
     directly or indirectly purchase, redeem, acquire or retire (or make any
     capital contribution to purchase, redeem, acquire or retire) any shares of
     the capital stock of or partnership or limited liability company interests
     in any Restricted Person (whether such interests are now or hereafter
     issued, outstanding or created), or cause or permit any reduction or
     retirement of the capital stock of any Restricted Person, while any Loan or
     any Commitment is outstanding.

     (S) 2.9.  Prohibited Contracts.  The reference to "as described in the
Disclosure Schedule" set forth in the first sentence of Section 7.10 of the
Original Agreement is hereby amended to refer instead to "as described in the
Disclosure Schedule or pursuant to a Restriction Exception, the substance of
which, in detail satisfactory to Administrative Agent, is promptly reported to
Administrative Agent".

     (S) 2.10.  Debt Coverage Ratio.  Section 7.12 of the Original Agreement is
hereby amended in its entirety to read as follows:

          Section 7.12  Debt Coverage Ratio.  (a) At the end of any Fiscal
     Quarter, (b) on any date on which General Partner declares a distribution
     permitted under Section 7.6 and (c) on the date of any Permitted
     Acquisition, both immediately prior to and after giving effect to the
     consummation thereof, the Debt Coverage Ratio will not be greater than 4.00
     to 1.0.  As used herein, "Debt Coverage Ratio" means the ratio of (a)
     Consolidated Funded Indebtedness to (b) Consolidated EBITDA for the four
     Fiscal Quarter period (or other period specified below) most recently ended
     prior to the date of determination for which financial statements
     contemplated by Section 6.2(a) or (b) are available to Borrower; provided,
     for purposes of this Section 7.12, if, since the beginning of the four
     Fiscal Quarter period ending on the date for which Consolidated EBITDA is
     determined, any Restricted Person shall have made any asset disposition or
     acquisition, shall have consolidated or merged with or into any Person
     (other than another Restricted Person), or shall have made any disposition
     or acquisition of a Restricted Person or disposition or acquisition of any
     partial ownership interest in any other Person, Consolidated EBITDA shall
     be calculated giving pro forma effect thereto as if the disposition,
     acquisition, consolidation or merger had occurred on the first day of such
     period; provided, with respect to any Person not constituting a Subsidiary
     of Plains MLP, such pro forma calculation of Consolidated EBITDA, with
     respect to any such Person, shall be limited to not more than 75% of (i)
     such Restricted Person's ownership interest in such Person times (ii) the
     difference of such Person's (A) Consolidated EBITDA minus (B) Interest
     Expense and capital expenditures.  Such pro forma effect shall include
     adjustments with respect to management fees previously distributed with
     respect to the assets subject to the CanPet Acquisition and the acquisition
     of the remaining 50% of the Manito Pipeline in mid calendar year 2000, and
     shall otherwise be determined (i) in good faith by the chief financial
     officer of Borrower, and (ii) without giving effect to any anticipated or
     proposed change in operations, revenues, expenses or other items included
     in the computation of Consolidated EBITDA, except with the consent of
     Majority Lenders.

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     (S) 2.11.  Unrestricted Subsidiaries.  Article VII of the Original
Agreement is hereby amended by adding a new Section 7.18 at the end thereof, to
read as follows:

          Section 7.18  Unrestricted Subsidiaries.  Plains MLP or any Wholly
     Owned Subsidiary of Plains MLP may designate one or more direct
     Subsidiaries that are not Borrower or Guarantors (each such Subsidiary, and
     each of its Subsidiaries, each an "Unrestricted Subsidiary"), which
     Unrestricted Subsidiaries shall be subject to the following:

     (a)  No Unrestricted Subsidiary shall be deemed to be a "Restricted Person"
          or a "Subsidiary" of Plains MLP for purposes of this Agreement or any
          other Loan Document, and no Unrestricted Subsidiary shall be subject
          to or included within the scope of any provision herein or in any
          other Loan Document, including without limitation any representation,
          warranty, covenant or Event of Default  herein or in any other Loan
          Document, except as set forth in this Section 7.18.

     (b)  No Restricted Person shall guarantee or otherwise become liable in
          respect of any Liability or other obligation of, grant any Lien on any
          of its property to secure any Liability or other obligation of, make
          any Investment in (except as described in clause (g) of the definition
          of  Permitted Investments), or provide any other form of credit
          support to, any Unrestricted Subsidiary, and no Restricted Person
          shall enter into any contract or agreement with any Unrestricted
          Subsidiary, except in the course of ordinary business on terms no less
          favorable to such Restricted Person, as applicable, than could be
          obtained in a comparable arm's length transaction with a non-Affiliate
          of such Restricted Person.

     (c)  Borrower shall at all times maintain, as between Restricted Persons
          and Unrestricted Subsidiaries, the separate existence of each
          Unrestricted Subsidiary.

     (d)  No Restricted Person shall make any Investment in any Unrestricted
          Subsidiary pursuant to clause(g) of the definition of "Permitted
          Investment" except in connection with the capitalization of an
          Unrestricted Subsidiary to consummate a proposed acquisition,
          disclosed to Administrative Agent in writing, of (1) the acquisition
          of the capital stock or other equity interest in a Person whose
          business, assets and operations consist of Petroleum Products and/or
          gas marketing, gathering, transportation, storage, terminaling and
          pipeline operation; provided, if a Restricted Person acquires less
          than all of the capital stock or other equity interest acquired, such
          business, assets and operations shall consist of transportation,
          storage, terminaling and/or pipeline operations and associated
          gathering assets, or (2) the acquisition of all or a portion of a line
          of business or the business, assets or operations of a Person (whether
          in a single transaction or a series of related transactions)
          consisting of Petroleum Products and/or gas marketing, gathering,
          transportation, storage, terminaling and pipeline operation; provided,
          if a Restricted Person acquires less than all of the ownership
          interest of the business, assets or operations acquired, such
          business, assets and operations

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          shall consist of transportation, storage, terminaling and/or pipeline
          operations and associated gathering assets; provided, further, the
          aggregate amount of any such Permitted Investments in such
          Unrestricted Subsidiary in excess of the purchase price and associated
          acquisition costs relating to such acquisition shall, promptly
          following the consummation of such acquisition, be distributed back to
          such investing Restricted Person.  In the event such Unrestricted
          Subsidiary shall fail to timely consummate such specified acquisition
          or such specified acquisition shall otherwise be abandoned, such
          Unrestricted Subsidiary shall be deemed to be a "Subsidiary" of Plains
          MLP for purposes of this Agreement and shall be subject to the terms
          and conditions hereof.

     (e)  Restricted Persons shall notify each Lender Party, not later than five
          (5) Business Days after any executive officer of Restricted Persons
          has knowledge of, under any Environmental Law, any claim of the Dollar
          Equivalent of $1,000,000 or more, any notice of potential liability
          which might be reasonably likely to exceed such amount, or any other
          material adverse claim thereunder asserted against any Unrestricted
          Subsidiary or with respect to any Unrestricted Subsidiary's
          properties, stating that such notice is being given pursuant to this
          Section 7.18.

     The board of directors of the corporate general partner of the Borrower may
     designate any Unrestricted Subsidiary to become a Restricted Person if a
     Default or Event of Default is not continuing, such designation would not
     result in a Default or an Event of Default, and immediately thereafter such
     Subsidiary has no outstanding Indebtedness.  Immediately thereafter,
     Borrower shall promptly notify the Administrative Agent of such designation
     and provide to it an officer's certificate that such designation was made
     in compliance with this Section 7.18.

                  ARTICLE III. -- Conditions of Effectiveness

     (S) 3.1.  Effective Date. This Amendment shall become effective as of the
date first written above, when and only when:

          (i) Administrative Agent shall have received, at Administrative
     Agent's office (A) a counterpart of this Amendment executed and delivered
     by Borrower, Plains MLP, All American and Majority Lenders, and (B) a
     contemporaneous amendment to the Revolver Agreement, amending various
     provisions therein consistent with the amendments set forth herein, in form
     and substance acceptable to Administrative Agent, executed and delivered by
     such Persons so as to make such amendment effective,

          (ii) in consideration hereof Borrower shall have paid to
     Administrative Agent for the account of each Lender executing and
     delivering this Amendment an amendment fee in immediately available funds
     equal to one-twentieth of one percent (0.05%) of each such Lender's
     Percentage Share of the Maximum Facility Amount; and

          (iii) Administrative Agent shall have additionally received all of the
     following documents, each document (unless otherwise indicated) being dated
     the date of receipt

                                       10


     thereof by Administrative Agent, duly authorized, executed and delivered,
     and in form and substance satisfactory to Administrative Agent:

               (A) Officer's Certificate.  A certificate of a duly authorized
          officer of General Partner, to the effect that all of the
          representations and warranties set forth in Article IV hereof are true
          and correct at and as of the date thereof, and

               (B) Supporting Documents.  Such supporting documents as
          Administrative Agent may reasonably request.

                 ARTICLE IV. -- Representations and Warranties

     (S) 4.1.  Representations and Warranties of Plains MLP and Borrower.  In
order to induce Administrative Agent and Lenders to enter into this Amendment,
Plains MLP and Borrower represent and warrant to Administrative Agent and each
Lender that:

          (a) The representations and warranties contained in Article V of the
     Original Agreement are true and correct at and as of the time of the
     effectiveness hereof, except to the extent that such representation and
     warranty was made as of a specific date.

          (b) Each Restricted Person is duly authorized to execute and deliver
     this Amendment and each other Amendment Document, to the extent a party
     thereto, and each Borrower is and will continue to be duly authorized to
     borrow and perform its obligations under the Credit Agreement.  Each
     Restricted Person has duly taken all action necessary to authorize the
     execution and delivery of this Amendment and each other Amendment Document,
     to the extent a party thereto, and to authorize the performance of their
     respective obligations hereunder.

          (c) The execution and delivery by each Restricted Person of this
     Amendment and each other Amendment Document, to the extent a party thereto,
     the performance by each Restricted Person of its respective obligations
     hereunder and thereunder, and the consummation of the transactions
     contemplated hereby and thereby, do not and will not conflict with any
     provision of any Law or of the organizational documents of any Restricted
     Person, or of any material agreement, judgment, license, order or permit
     applicable to or binding upon any Restricted Person, or result in the
     creation of any Lien upon any assets or properties of any Restricted
     Person, except in favor of Administrative Agent for the benefit of Lenders
     and other Permitted Liens.  Except for those which have been duly obtained,
     no consent, approval, authorization or order of any Tribunal or third party
     is required in connection with the execution and delivery by any Restricted
     Person of this Amendment or any other Amendment Document, or to consummate
     the transactions contemplated hereby and thereby.

          (d)  When duly executed and delivered, each of this Amendment and each
     other Amendment Document, and each of the Loan Documents, as amended hereby
     and thereby, will be a legal and binding instrument and agreement of each
     Restricted Person to the extent a party thereto, enforceable in accordance
     with its terms, (subject, as to

                                       11


     enforcement of remedies, to applicable bankruptcy, insolvency and similar
     laws applicable to creditors' rights generally).

                          ARTICLE V. -- Miscellaneous

     (S) 5.1.  Ratification of Agreements.  The Original Agreement, as hereby
amended, is hereby ratified and confirmed in all respects.  The Loan Documents
(including but not limited to each Guaranty), as they may be amended or affected
by this Amendment or any other Amendment Document, are hereby ratified and
confirmed in all respects by each Restricted Person to the extent a party
thereto.  Any reference to the Credit Agreement in any Loan Document shall be
deemed to refer to this Amendment also.   The execution, delivery and
effectiveness of this Amendment and the other Amendment Documents shall not,
except as expressly provided herein, operate as a waiver of any right, power or
remedy of Administrative Agent or any Lender under the Credit Agreement or any
other Loan Document nor constitute a waiver of any provision of the Credit
Agreement or any other Loan Document.

     (S) 5.2.  Ratification of Security Documents.  Restricted Persons,
Administrative Agent, and Lenders each acknowledge and agree that any and all
indebtedness, liabilities or obligations arising under or in connection with the
LC Obligations or the Notes are Obligations and are secured indebtedness under,
are guarantied by, and are secured by, each and every Security Document to which
any Restricted Person is a party.  Each Restricted Person hereby re-pledges, re-
grants and re-assigns a security interest in and lien on every asset of the such
Restricted Person described as Collateral in any Security Document and re-
guarantees all Obligations under the Credit Agreement.

     (S) 5.3.  Ratification of Intercreditor Agreement.  Each Lender hereby
acknowledges and confirms that all Obligations under the Credit Agreement, as
amended hereby, and the "Obligations" under the Marketing Credit Agreement, as
amended on the date hereof, shall be and shall remain subject to the terms and
entitled to the benefits of the Intercreditor Agreement.

     (S) 5.4.  Survival of Agreements.  All representations, warranties,
covenants and agreements of the Restricted Persons herein shall survive the
execution and delivery of this Amendment and the performance hereof, including
without limitation the making or granting of each Loan, and shall further
survive until all of the Obligations under the Credit Agreement are paid in
full.  All statements and agreements contained in any certificate or instrument
delivered by any Restricted Person hereunder or under the Credit Agreement to
Administrative Agent or any Lender shall be deemed to constitute representations
and warranties by, or agreements and covenants of, such Restricted Person under
this Amendment and under the Credit Agreement.

     (S) 5.5.  Loan Documents.  This Amendment and each other Amendment Document
is a Loan Document, and all provisions in the Credit Agreement pertaining to
Loan Documents apply hereto.

     (S) 5.6.  GOVERNING LAW.  THIS AMENDMENT SHALL BE GOVERNED BY AND CONSTRUED
IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW

                                       12


YORK AND ANY APPLICABLE LAWS OF THE UNITED STATES OF AMERICA IN ALL RESPECTS,
INCLUDING CONSTRUCTION, VALIDITY AND PERFORMANCE.

     (S) 5.7.  Counterparts.  This Amendment may be separately executed in
counterparts and by the different parties hereto in separate counterparts, each
of which when so executed shall be deemed to constitute one and the same
Amendment.

                                       13


     IN WITNESS WHEREOF, this Amendment is executed as of the date first above
written.

BORROWER:                     PLAINS MARKETING, L.P.

                              By:  Plains Marketing GP Inc., General Partner

                              By:   /s/ Phil Kramer
                                    -------------------------------------
                                    Phil Kramer, Exec. Vice President

GUARANTORS:                   ALL AMERICAN PIPELINE, L.P.

                              By:  Plains Marketing GP Inc., General Partner

                              By:   /s/ Phil Kramer
                                    -------------------------------------
                                    Phil Kramer, Exec. Vice President

                              PLAINS ALL AMERICAN PIPELINE, L.P.

                              By:  Plains AAP, L.P., General Partner

                              By:  Plains All American LLC, General Partner

                              By:   /s/ Phil Kramer
                                    -------------------------------------
                                    Phil Kramer, Exec. Vice President

                                       14


LENDER PARTIES:               FLEET NATIONAL BANK,
                              Administrative Agent, LC Issuer and Lender

                              By:   /s/  Terrence Ronan
                                    -------------------------------------
                                    Terrence Ronan, Managing Director

                              FIRST UNION NATIONAL BANK, Lender

                              By:   /s/  Robert R. Wetteroff
                                    -------------------------------------
                                    Robert R. Wetteroff, Sr. Vice Pres.

                              BANK OF AMERICA, N.A., Lender

                              By:
                                    -------------------------------------
                                    Name:
                                    Title:

                              BANK ONE, NA, Lender

                              By:
                                    -------------------------------------
                                    Name:
                                    Title:

                              FORTIS CAPITAL CORP., Lender

                              By:
                                    -------------------------------------
                                    Name:
                                    Title:

                              By:
                                    -------------------------------------
                                    Name:
                                    Title:

                              U.S. BANK NATIONAL ASSOCIATION, Lender

                              By:
                                    -------------------------------------
                                    Name:
                                    Title:

                              BANK OF SCOTLAND, Lender

                              By:
                                    -------------------------------------
                                    Name:
                                    Title:

                                       15


                              WELLS FARGO BANK (TEXAS),
                              NATIONAL ASSOCIATION, Lender

                              By:
                                    -------------------------------------
                                    Name:
                                    Title:

                              THE BANK OF NOVA SCOTIA, Lender

                              By:
                                    -------------------------------------
                                    Name:
                                    Title:

                              CREDIT AGRICOLE INDOSUEZ, Lender

                              By:
                                    -------------------------------------
                                    Name:
                                    Title:

                              By:
                                    -------------------------------------
                                    Name:
                                    Title:

                              TORONTO DOMINION (TEXAS), INC., Lender

                              By:
                                    -------------------------------------
                                    Name:
                                    Title:

                              SOUTHWEST BANK OF TEXAS, N.A., Lender

                              By:
                                    -------------------------------------
                                    Name:
                                    Title:

                              UNION BANK OF CALIFORNIA, N.A., Lender

                              By:
                                    -------------------------------------
                                    Name:
                                    Title:

                                       16


                              COMERICA BANK-TEXAS, Lender

                              By:
                                    -------------------------------------
                                    Name:
                                    Title:

                              BNP PARIBAS, Lender

                              By:
                                    -------------------------------------
                                    Name:
                                    Title:

                              By:
                                    -------------------------------------
                                    Name:
                                    Title:

                              GUARANTY BANK, Lender

                              By:
                                    -------------------------------------
                                    Name:
                                    Title:

                              SIEMENS FINANCIAL SERVICES INC., Lender

                              By:
                                    -------------------------------------
                                    Name:
                                    Title:

                                       17


                             CONSENT AND AGREEMENT

     Each of the undersigned hereby consents to the provisions of this Amendment
and the transactions contemplated herein and hereby (i) acknowledges and agrees
that any and all indebtedness, liabilities or obligations arising under or in
connection with the Notes are Obligations and are secured indebtedness under,
and are secured by, each and every Security Document to which it is a party,
(ii) re-pledges, re-grants and re-assigns a security interest in and lien on all
of its assets described as collateral in any Security Document, (iii) ratifies
and confirms its Guaranty dated May 4, 2001 made by it for the benefit of
Administrative Agent and Lenders, and (iv) expressly acknowledges and agrees
that the undersigned guarantees all indebtedness, liabilities and obligations
arising under or in connection with any and all Notes pursuant to the terms of
such Guaranty, and agrees that its obligations and covenants thereunder are
unimpaired hereby and shall remain in full force and effect.

                              PLAINS MARKETING CANADA LLC

                              By:  Plains Marketing, L.P., its sole member

                                    By:  Plains Marketing GP Inc.,
                                         its general partner

                                    By:   /s/ Phil Kramer
                                       -------------------------------------
                                       Phil Kramer, Exec. Vice President


                              PMC (NOVA SCOTIA) COMPANY

                              By:   /s/ Phil Kramer
                                   -------------------------------------
                                   Phil Kramer, Exec. Vice President


                              PLAINS MARKETING CANADA, L.P.

                              By:  PMC (Nova Scotia) Company,
                                    General Partner

                              By:   /s/ Phil Kramer
                                   -------------------------------------
                                   Phil Kramer, Exec. Vice President

                                       18