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