Bharat Petroleum Corporation Limited (BPCL)
Castrol Limited (BP p.l.c.)
Chevron Corporation
China Petroleum & Chemical Corporation (Sinopec)
ExxonMobil Corporation
Fuchs Petrolub SE
Gazprom Neft OJSC
GS Caltex Corporation
Gulf Oil LP
Hindustan Petroleum Corporation Limited (HPCL)
Idemitsu Kosan Co. Ltd. Indian Oil Corporation Limited
Kluber Lubrication GmbH (Freudenberg Chemical Specialities SE & Co. KG)
Liqui Moly GmbH (Adolf Wurth GmbH & Co. KG)
LUKOIL PJSC
Motul S.A. Petro-Canada Lubricants Inc. Petroliam Nasional Berhad
Repsol S.A. Schaeffer Manufacturing Co. Shell plc
The Phillips 66 Company
Tongyi Petroleum Chemical Co. Ltd. TotalEnergies SE
Valvoline Inc.