EXHIBIT 23.1 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation by reference in this Amendment No. 1 to the Registration Statement on Form S-4 of our report dated March 5, 2002, included in Pennzoil-Quaker State Company's Annual Report on Form 10-K for the year ended December 31, 2001, and to all references to our Firm included in this Amendment No. 1 to the Registration Statement. ARTHUR ANDERSEN LLP /s/ ARTHUR ANDERSEN LLP Houston, Texas March 29, 2002