UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) May 11, 2005

Plains All American Pipeline, L.P.

(Exact name of registrant as specified in its charter)

333 Clay Street, Suite 1600, Houston, Texas 77002

(Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code 713-646-4100

(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

o                                    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o            Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o            Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o            Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

We entered into an amendment to our secured hedged inventory credit facility, to increase the facility by $300 million, for a total capacity of $800 million. The facility is an uncommitted working capital facility, used to finance the purchase of hedged crude oil inventory for storage when market conditions warrant. Borrowings under the facility are secured by the inventory under the facility and the associated accounts receivable, and are repaid from the proceeds of the sale of the inventory.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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INDEX TO EXHIBITS

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EXHIBIT 10.1

SECOND AMENDMENT TO RESTATED CREDIT AGREEMENT

THIS SECOND AMENDMENT TO RESTATED CREDIT AGREEMENT (this “Amendment”) executed as of the 11th day of May, 2005, to be effective as of the 20^th day of May, 2005, by and among PLAINS MARKETING, L.P. (“Borrower”), BANK OF AMERICA, N.A., as Administrative Agent, BNP Paribas, as Syndication Agent, Fortis Capital Corp., as Documentation Agent, and the Lenders party hereto.

W I T N E S S E T H:

WHEREAS, Borrower, Administrative Agent and Lenders named therein entered into that certain Restated Credit Agreement dated as of November 19, 2004, as amended by First Amendment to Restated Credit Agreement dated as of April 20, 2005 (as heretofore amended, the “Original Agreement”) for the purposes and consideration therein expressed; and

WHEREAS, Borrower, 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, 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

§ 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.

§ 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 § 1.2.

“Amendment” means this Second Amendment to Credit Agreement.

“Credit Agreement” means the Original Agreement as amended hereby.

ARTICLE II. — Amendments

§ 2.1.                    Definitions.  The definition of “Maximum Facility Amount” set forth in Section 1.1 of the Original Agreement is hereby amended in its entirety to read as follows

“Maximum Facility Amount” means $800,000,000, as such Maximum Facility Amount may be increased from time to time pursuant to Section 2.1(e).

Section 1.1 of the Original Agreement is hereby amended by adding the following new defined terms in their proper alphabetical order:

“Documentation Agent” means Fortis Capital Corp., and its successors in such capacity.

“Syndication Agent” means BNP Paribas, and its successors in such capacity.

§ 2.2.                    Increase of Maximum Facility Amount.  Clause (ii) of Section 2.1(e) of the Original Agreement is hereby deleted in its entirety, and clause (iii) of such Section 2.1(e) is hereby redesignated as clause (ii) thereof.

§ 2.3.                    Syndication Agent and Documentation Agent.  BNP Paribas and Fortis Capital Corp. are hereby appointed Syndication Agent and Documentation Agent under the Credit Agreement, respectively, and each hereby accepts such appointment.  In connection therewith, Section 9.8 of the Original Agreement is hereby amended in its entirety to read as follows:

Section 9.8.  No Other Duties, Etc.  Anything herein to the contrary notwithstanding, none of Administrative Agent, Syndication Agent or Documentation Agent shall have any powers, duties or responsibilities under this Agreement or any of the other Loan Documents, except in its capacity, as applicable, as Administrative Agent, Syndication Agent or Documentation Agent, or as a Lender or an LC Issuer hereunder.

§ 2.4.                    Schedules  Schedule II to the Original Agreement is hereby amended in its entirety to read as set forth on Schedule II attached hereto.  Upon the effectiveness hereof, each Lender a party hereto agrees to a portion of the Maximum Facility Amount equal to the amount set forth opposite its name on such Schedule II of the Credit Agreement.

§ 2.5.                    Confirmation of Prior Approved Financing Requests  Each Lender a party hereto hereby confirms that it has previously approved the following Financing Requests and acknowledges and agrees that such approvals shall apply with respect to its portion of the Maximum Facility Amount agreed to hereby:

1.               Financing Request-Initial dated April 6, 2005 with respect to a Delivery Month of April, 2005 and an Initial Financing Request of $496,800,000 and related Financing Request-Final dated April 29, 2005 with Final Financing Request of $482,000,000.

2.               Special Financing Request 2005 #3.2 dated April 6, 2005 totaling $4,400,000 and Special Financing Request 2005 #3.3 dated April 29, 2005 totaling $4,400,000.

3.               Financing Request-Initial dated April 29, 2005 with respect to a Delivery Month of May, 2005 and an Initial Financing Request of $600,100,000.

4.               Special Financing Request 2005 #5.1 dated April 29, 2005 totaling $18,700,000.

5.               Special Financing Request 2005 #6.1 dated April 29, 2005 totaling $7,300,000.

§ 2.6.                    New Lenders.  Upon their execution and as of the effectiveness hereof, each of JPMorgan Chase Bank, N.A., Commerzbank AG, New York and Grand Cayman Branches, The Bank of Nova Scotia, and SunTrust Bank shall be a party to the Credit Agreement and shall have the rights and obligations of a Lender thereunder.

ARTICLE III. — Conditions of Effectiveness

§ 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 counterpart of this Amendment executed and delivered by Borrower and Lenders;

(ii)  Administrative Agent shall have additionally received all of the following documents, each document (unless otherwise indicated) being dated the date of receipt thereof by Administrative Agent, duly authorized, executed and delivered, and in form and substance satisfactory to Administrative Agent:

New Notes.  New Notes, payable to each new Lender and each existing Lender that is increasing its Percentage Share of the Maximum Facility Amount, in the amount of such Lender’s Percentage Share of the Maximum Facility Amount.

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

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ARTICLE IV. — Representations and Warranties

§ 4.1.                    Representations and Warranties of Borrower.  In order to induce Administrative Agent and Lenders to enter into this Amendment, Borrower represents and warrants 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 or updated, modified or supplemented as of a subsequent date with the consent of Majority Lenders, then in each case, such other date.

(b)                                 Borrower is duly authorized to execute and deliver this Amendment, and Borrower is and will continue to be duly authorized to borrow and perform its obligations under the Credit Agreement.  Borrower has duly taken all action necessary to authorize the execution and delivery of this Amendment and to authorize the performance of its obligations hereunder.

(c)                                  The execution and delivery by Borrower of this Amendment,  the performance by it of its obligations hereunder, and the consummation of the transactions contemplated hereby, do not and will not (i) violate any provision of (1) Law applicable to it, (2) its organizational documents, or (3) any judgment, order or material license or permit applicable to or binding upon it, (ii) result in the acceleration of any Indebtedness owed by it, or (iii) result in or require the creation of any consensual Lien upon any of its material assets or properties, except as expressly contemplated in, or permitted by, the Loan Documents.  Except as expressly contemplated in, or permitted by, the Loan Documents, disclosed in the Disclosure Schedule or disclosed pursuant to Section 6.4 of the Credit Agreement, no permit, consent, approval, authorization or order of, and no notice to or filing, registration or qualification with, any Governmental Authority is required on the part of Borrower pursuant to the provisions of any material Law applicable to it as a condition to its execution, delivery or performance of this Amendment, or to consummate the transactions contemplated hereby.

(d)                                 When duly executed and delivered, this Amendment and each of the Loan Documents, as amended hereby, will be a legal and binding obligation of Borrower, enforceable in accordance with its terms, except as such enforcement may be limited by bankruptcy, insolvency or similar Laws of general application relating to the enforcement of creditors’ rights and general principles of equity.

ARTICLE V. — Miscellaneous

§ 5.1.                    Ratification of Agreements.  The Original Agreement, as hereby amended, is hereby ratified and confirmed in all respects.  The Loan Documents, as they may be amended or affected by this Amendment, are hereby ratified and confirmed in all respects by Borrower.  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 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.

§ 5.2.                    Ratification of Security Documents.  Borrower, 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, and are secured by, each and every Security Document.  Borrower hereby re-pledges, re-grants and re-assigns a security interest in and lien on every asset of Borrower described as Collateral in any Security Document.

§ 5.3.                    Survival of Agreements.  All representations, warranties, covenants and agreements of Borrower 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

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the Obligations under the Credit Agreement are paid in full.  All statements and agreements contained in any certificate or instrument delivered by Borrower 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, Borrower under this Amendment and under the Credit Agreement.

§ 5.4.                    Loan Documents.  This Amendment is a Loan Document, and all provisions in the Credit Agreement pertaining to Loan Documents apply hereto.

§ 5.5.                  GOVERNING LAW.  THIS AMENDMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK AND ANY APPLICABLE LAWS OF THE UNITED STATES OF AMERICA IN ALL RESPECTS, INCLUDING CONSTRUCTION, VALIDITY AND PERFORMANCE.

§ 5.6.                    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.  Delivery of an executed signature page by facsimile transmission shall be effective as delivery of a manual executed counterpart.

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

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