EXHIBIT 23.1 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation of our report dated March 5, 2002, 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, 333-72835, 333-96385, 333-36036, 333-60662 and 333-74434, Form S-4 No. 333-61541 and on Form S-3 No. 333-65909. ARTHUR ANDERSEN LLP Houston, Texas March 5, 2002