?- bp p.l.c.
- Chevron Corporation
- China Petrochemical Corporation (SINOPEC)
- Exxon Mobil Corporation
- FUCHS
- Gazpromneft ? Lubricants Ltd.
- Gulf Oil International
- Idemitsu Kosan Co.Ltd.
- Indian Oil Corporation Ltd
- JXTG Nippon Oil & Energy Corporation
- LUKOIL
- Quepet Lubricants
- Royal Dutch Shell plc
- Total