1 EXHIBIT 23(a) CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation by reference in this Form S-8 Registration Statement relating to the Pennzoil Company 1998 Stock Option Plan of our report dated February 27, 1998 included in Pennzoil Company's Form 10-K for the year ended December 31, 1997 and to all references to our Firm included in this registration statement. Houston, Texas July 13, 1998