Amsoil Inc. Bioblend Renewable Resources
Chevron Corporation
China Petroleum & Chemical Corporation (Sinopec Corp)
Elba Lubrication Inc. Exxon Mobil Corporation
Frontier Performance Lubricants
Fuchs Petrolub SE
Klondike Lubricants Corporation
Kluber Lubrication
Lubrizol Corporation
Pennine Lubricants
Petro Canada Lubricants
Petronas Lubricants International (PLI)
Phillips 66 Company
Repsol SA
Royal Dutch Shell
Rymax Lubricants