risks and uncertainties with respect to the actual quantities of petroleum products and crude oil shipped on our pipelines and/or terminalled in our terminals

Exhibit 4.3

FIRST SUPPLEMENTAL INDENTURE

First Supplemental Indenture (this “First Supplemental Indenture”), dated as of April 14, 2010, among Holly Energy Storage-Tulsa LLC, a Delaware limited liability company (“HES Tulsa”) and Holly Energy Storage-Lovington LLC (“HES Lovington” and collectively with HES Tulsa, the “Guaranteeing Subsidiaries”), Holly Energy Partners, L.P., a Delaware limited partnership (“Holly Energy Partners”), and Holly Energy Finance Corp. (“Finance Corp.” and, together with Holly Energy Partners, the “Issuers”), the other Guarantors (as defined in the Indenture referred to herein) and U.S. Bank National Association, as trustee under the Indenture referred to below (the “Trustee”).

W I T N E S S E T H

WHEREAS, the Issuers have heretofore executed and delivered to the Trustee an indenture (the “Indenture”), dated as of March 10, 2010 providing for the issuance of 8.25% Senior Notes due 2018 (the “Notes”);

WHEREAS, the Indenture provides that under certain circumstances the Guaranteeing Subsidiaries shall execute and deliver to the Trustee a supplemental indenture pursuant to which the Guaranteeing Subsidiaries shall unconditionally guarantee all of the Issuers’ Obligations under the Notes and the Indenture on the terms and conditions set forth herein (the “Note Guarantee”); and

WHEREAS, pursuant to Section 9.01 of the Indenture, the Trustee is authorized to execute and deliver this First Supplemental Indenture.

NOW, THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt of which is hereby acknowledged, the Guaranteeing Subsidiaries and the Trustee mutually covenant and agree for the equal and ratable benefit of the Holders of the Notes as follows:

1. Capitalized Terms. Capitalized terms used herein without definition shall have the meanings assigned to them in the Indenture.

2. Agreement to Guarantee. The Guaranteeing Subsidiaries hereby agree to provide an unconditional Guarantee on the terms and subject to the conditions set forth in the Note Guarantee and in the Indenture including but not limited to Article 10 thereof.

4. No Recourse Against Others. No past, present or future director, officer, employee, incorporator, stockholder or agent of the Guaranteeing Subsidiaries, as such, shall have any liability for any obligations of the Issuers or any Guaranteeing Subsidiaries under the Notes, any Note Guarantee, the Indenture or this First Supplemental Indenture or for any claim based on, in respect of, or by reason of, such obligations or their creation. Each Holder of the Notes by accepting a Note waives and releases all such liability. The waiver and release are part of the consideration for issuance of the Notes. Such waiver may not be effective to waive liabilities under the federal securities laws and it is the view of the SEC that such a waiver is against public policy.

First Supplemental Indenture

5. NEW YORK LAW TO GOVERN. THE LAW OF THE STATE OF NEW YORK SHALL GOVERN AND BE USED TO CONSTRUE THIS SUPPLEMENTAL INDENTURE.

6. Counterparts. The parties may sign any number of copies of this First Supplemental Indenture. Each signed copy shall be an original, but all of them together represent the same agreement.

7. Effect of Headings. The Section headings herein are for convenience only and shall not affect the construction hereof.

8. The Trustee. The Trustee shall not be responsible in any manner whatsoever for or in respect of the validity or sufficiency of this First Supplemental Indenture or for or in respect of the recitals contained herein, all of which recitals are made solely by the Guaranteeing Subsidiaries and the Issuers.

First Supplemental Indenture

IN WITNESS WHEREOF, the parties hereto have caused this Supplemental Indenture to be duly executed and attested, all as of the date first above written.

Signature Page to First Supplemental Indenture

		ISSUERS:
		HOLLY ENERGY PARTNERS, L.P.
		By:		HEP Logistic Holdings, L.P., Its General Partner
				By:		Holly Logistic Services, L.L.C., Its General Partner
						By:		/s/ Bruce R. Shaw
								Name: Bruce R. Shaw
								Title: Senior Vice President and Chief Financial Officer
		HOLLY ENERGY FINANCE CORP.
		By:		/s/ Bruce R. Shaw
				Name: Bruce R. Shaw
				Title: Vice President and Chief Financial Officer

Signature Page to First Supplemental Indenture

Signature Page to First Supplemental Indenture

		HEP PIPELINE GP, L.L.C., a Delaware limited liability company
		HEP PIPELINE, L.L.C., a Delaware limited liability company
		HEP MOUNTAIN HOME, L.L.C., a Delaware limited liability company
		HEP REFINING, L.L.C., a Delaware limited liability company
		HEP REFINING GP, L.L.C., a Delaware limited liability company
		HEP WOODS CROSS, L.L.C., a Delaware limited liability company
		HEP TULSA LLC, a Delaware limited liability company
		HEP SLC, LLC, a Delaware limited liability company
		LOVINGTON-ARTESIA, L.L.C., a Delaware limited liability company
		ROADRUNNER PIPELINE, L.L.C., a Delaware limited liability company
		Each By:		Holly Energy Partners – Operating, L.P., a Delaware limited liability company and Its Sole Member
				By:		/s/ Bruce R. Shaw   Name: Bruce R. Shaw
						Title: Vice President and Chief Financial Officer

Signature Page to First Supplemental Indenture

		HEP FIN-TEX/TRUST-RIVER, L.P., a Texas limited partnership
		HEP NAVAJO SOUTHERN, L.P., a Delaware limited partnership
		HEP PIPELINE ASSETS, LIMITED PARTNERSHIP, a Delaware limited partnership
		Each by:				HEP Pipeline GP, L.L.C., a Delaware limited liability company, its General Partner
						By:		/s/ Bruce R. Shaw
								Name: Bruce R. Shaw
								Title: Vice President and Chief Financial Officer
		HEP REFINING ASSETS, L.P., a Delaware limited partnership
		By:		HEP Refining GP, L.L.C., a Delaware limited liability company, its General Partner
						By:		/s/ Bruce R. Shaw   Name: Bruce R. Shaw
								Title: Vice President and Chief Financial Officer

Signature Page to First Supplemental Indenture

Signature Page to First Supplemental Indenture