1. Afton Chemical Limited
2. Amalie Oil Company
3. American Hitech Petroleum & Chemicals Inc.
4. AMSOIL Inc.
5. BASF SE
6. BP PLC
7. Calumet Specialty Products Partners
L.P.
8. Chevron Corp.
9. China Petrochemical Corporation
10. CRP Industries Inc.
11. Evonik Industries AG
12. ExxonMobil Corp
13. Ford Motor Company
14. FUCHS SE
15. Gulf Oil Lubricants India Limited
16. HF Sinclair Corporation
17. Kemipex
18. Millers Oils Ltd
19. Petroliam Nasional Berhad
20. PJSC LUKOIL
21. Shell PLC
22. The Lubrizol Corporation
23. The Phillips 66 Company
24. Total S.A.
25. Valvoline Inc.