EXHIBIT 23.1 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation by reference in this Amendment No. 3 to Form S-4 Registration Statement (No. 333- 43003) of our report dated February 27, 1998 included in Pennzoil Company's Annual Report on Form 10-K for the year ended December 31, 1997 and to all references to our Firm included in this registration statement. ARTHUR ANDERSEN LLP Houston, Texas June 30, 1998