1 EXHIBIT 21 SUBSIDIARIES OF PENNZOIL COMPANY (AS OF DECEMBER 31, 1995) PZL PARENT ----- ----- Duval Corporation of Indonesia (Delaware).............................. 100% Duval Sales International, S.A. (Belgium).............................. 100% Duval Services Company (Belgium)....................................... 99% Jiffy Lube International, Inc. (Nevada)................................ 100% American Oil Change Corporation (Delaware)........................ 100% Heritage Merchandising Co., Inc. (Virginia)....................... 100% Jiffy Lube International of Maryland, Inc. (Maryland)............. 100% Pennzoil Exploration and Production Company (Delaware)................. 100% Cachuma Gas Processing Company (Delaware)......................... 100% Capitan Oil Pipeline Company (Delaware)........................... 100% Pennzoil Gas Marketing Company (Delaware)......................... 100% PennUnion Energy Services, L.L.C. (Delaware)................. 50% Pennzoil International Company (Delaware)......................... 100% Pennzoil Caspian Corporation (British Virgin Islands)........ 100% Pennzoil Caspian Development Corporation (British Virgin Islands)................................................... 100% Pennzoil Egypt, Inc. (Delaware).............................. 100% Pennzoil Qatar, Inc. (Delaware).............................. 100% Pennzoil Venezuela Corporation, S.A. (British Virgin Islands)................................................... 100% Pennzoil Petroleum Pipeline Company (Delaware).................... 100% Pennzoil Petroleums Ltd. (Delaware)............................... 100% Pennzoil Canada, Inc. (Alberta).............................. 100% Sisquoc Gas Pipeline Company (Delaware)........................... 100% Pennzoil Products Company (Nevada)..................................... 100% Atlas Processing Company (Delaware)............................... 100% Excel Paralubes (Texas General Partnership).................. 50% Pennzoil Iberica (Spain).......................................... 100% Pennzoil Industrial Company (Nevada).............................. 100% Pennzoil Products Australia Company (Nevada)...................... 100% Pennzoil Products Europe B.V. (Netherlands)....................... 100% Pennzoil Deutschland GmbH Mineralolvertrieb (Germany)........ 100% Pennzoil Europe B.V. (Netherlands)........................... 100% Pennzoil Wax Partner Company (Nevada)............................. 100% Bareco Products (South Carolina General Partnership)......... 50% Bareco International Sales Corporation (Virgin Islands).............................................. 100% UMW Pennzoil Distributors SDN. BHD. (Malaysia).................... 50% Richland Development Corporation (Nevada).............................. 100% Inco Real Estate Company (Nevada)................................. 100% Savannah Company Limited (Bermuda)................................ 100% Vermejo Park Corporation (Delaware)............................... 100% Vermejo Minerals Corporation (Delaware)...................... 100%