Motul Auto Cool Optimal Ultra is a concentrated engine anti freeze coolant which is capable of protecting down to temperatures of -54° C. Auto Cool Optimal Ultra features OAT (Organic Acid Technology) and is suitable for most modern vehicle cooling systems. As this coolant is concentrated it should be mixed with soft water. See the technical sheet below for recommended mix ratios.Organic Acid Technology (OAT) suitable for most modern vehicle cooling systemsConcentrated, requires mixing with soft waterProtects down to -54° COEM Approvals: Cummins IS series / N14 / 32-9011, Mercedes Benz MB 325.3, Fiat 9.55523. Ford WSS-M97B44-D, GM/Vauxhall/Opel/Saab 6227M (+B040 1065), QL 130100, John Deere JDMH5, MAN D36 5600, Maxda MEZ MN 121D, Mitsubishi JQ07913-014, Renault 41-01-001/-S Type D, Jaguar/Landrover CMR 8229, WSS-M97B44-D, VAG TL-774 D = G12 / TL-774 F + G12+, 61-0-0257Technical Data Sheet