EXHIBIT 23.1 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation by reference in this Registration Statement on Form S-4 relating to the Pennzoil Company Offer To Exchange Newly Issued Exchangeable Senior Debentures Due 2008 For A Portion Of Its Outstanding 6 1/2% And 4 3/4% Exchangeable Senior Debentures Due 2003 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 May 19, 1998