1. Apar Industries Limited
2. BASF SE
3. Calumet Specialty Products Partners
L.P.
4. Cargill
Incorporated
5. CASTROL LIMITED
6. Chevron Corporation
7. China Petroleum & Chemical Corporation
8. CITGO Petroleum Corporation
9. Engen Petroleum Limited
10. Ergon Inc.
11. Exxon Mobil Corporation
12. Gandhar Oil Refinery (India) Limited
13. Gulf Oil International Ltd.
14. HCS Holding GmbH
15. Hydrodec Group PLC
16. LODHA Petro
17. Mineral Oil Corporation
18. Nynas AB
19. PETRONAS Lubricants International
20. Phillips 66 Company
21. Royal Dutch Shell PLC
22. San Joaquin Refining Co. Inc.
23. Sasol Limited
24. The Dow Chemical Company
25. TULSTAR PRODUCTS INC.
26. Valvoline Inc.