Cooling System Stop Leak 12/300 ml V1 - 890603

Sealant for cooling systems. Effectively protects the cooling system and the cooling channels of the engine against sealing damages Suitable for all cooling systems of gasoline and diesel engines. Also for closed cooling systems Fully compatible with all types of antifreeze and coolants Direct effect Valvoline Cooling System Stop Leak has an instant effect after application Secures operation of cooling system: effectively prevents coolant loss by sealing hairline radiator cracks and preventing sealant sweating. Does not block the cooling channels