Description Alpine Antifreeze Extend is an ethylene glycol based automotive antifreeze and coolant, suitable for all year round use in the cooling systems of all internal combustion engines. Utilising OAT (Organic Acid Technology). Application To be used diluted with water for engine cooling systems in cars, vans, trucks, plant, buses and coaches with corrosion and frost protection. From 33% volume in water providing pumpability down to -12°C, to 50% volume in water providing pumpability down to -40°C.