RELEASE OF LIEN Date: August __, 1997 Note: Date: April 9, 1997 Original Amount: One Hundred Eighteen Thousand Two Hundred Forty-six and 84/100 Dollars ($118,246.84) Maker: Penn Octane Corporation Payee: Lauren Constructors, Inc. Date of Maturity: August 15, 1997 Holder of Note and Lien: Lauren Constructors, Inc. Holder's Mailing Address: P.O. Box 1761, Abilene, Texas 79604-1761 Note and Lien are described in the following document: Deed of Trust dated April 9, 1997, executed by Penn Octane Corporation, recorded in Volume 4305, Page 200, of the Official Records of Cameron County, Texas, securing the payment of a note in the amount of One Hundred Eighteen Thousand Two Hundred Forty-six and 84/100 Dollars ($118,246.84), payable to the order of Lauren Constructors, Inc. Property to be released from lien: Grantor's leasehold interest in two tracts of land in Cameron County, Texas described on Exhibit A. Holder of the note acknowledges its payment and releases the property from the lien(s). When the context requires, singular nouns and pronouns include the plural. Lauren Constructors, Inc. BY: /s/ Cleve Whitener -------------------- Cleve Whitener ITS: --------------------