1. AMSOIL Inc.
2. Bharat Petroleum Corporation Limited
3. BP PLC
4. Chevron Corporation
5. China National Petroleum Corporation
6. China Petroleum & Chemical Corporation
7. ENEOS Corporation
8. ExxonMobil Corporation
9. FUCHS Group
10. Hindustan Petroleum Corporation Limited
11. Phillips 66 Lubricants
12. Royal Dutch Shell PLC
13. Sinopec Lubricant Company
14. TotalEnergies SE
15. U.S. Venture Inc.
16. Valvoline Inc.