MoCool by MOTUL is a radiator additive which will reduce cooling system temperature by as much as 15 deg C (30 deg F).This performance additive offers better heat transfer than normal coolants. The unique formula also contains rust and corrosion inhibitors. Design to be used with pure water at a dilution of 5% (20:1) for competition use where monoethyleneglycol is not allowed or mix with your coolant at 5% of volume.Designed for aluminum, cast iron, copper, brass and bronze systems. MoCool is compatible with most antifreezes, including the new long life versions.