Leak stop: a sealant + a conditioner for cooling systems. The universal composition for sealing leaks in the radiator, the block head and the gasket of the cylinder block head. It prevents formation of hard deposits on the walls, protects from rusting and corrosion and lubricates the pump bearing. It is designed for cooling systems up to 9 liters. It is compatible with all types of anti-freezes. Application: Warm up the engine. Shake the bottle. Remove the radiator cover and pour the product into it. Start the engine for 15 minutes.