1 EXHIBIT 23.1 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation of our report dated March 11, 1999 included in this Form 10-K, into Pennzoil-Quaker State Company's previously filed Registration Statements on Form S-8 Nos. 333-69833, 333-69835, 333-69839, 333-69837, and 333-72835 and on Form S-3 No. 333-65909. ARTHUR ANDERSEN LLP Houston, Texas March 15, 1998