Valvoline Cooling System Stop Leak ML V1

Valvoline's Cooling System Leak Stop is designed to seal hairline cracks and leaks over time and effectively prevents coolant loss by sealing hairline cracks in the radiator and preventing gasket sweat. Does not clog coolant passages. Instruction Manual Unscrew the cap on the ...Valvoline's Cooling System Leak Stop is designed to seal hairline cracks and leaks over time and effectively prevents coolant loss by sealing hairline cracks in the radiator and preventing gasket sweat.

Does not clog coolant passages. Instruction Manual Unscrew the cap on the radiator, start the engine and turn the heater to the highest setting. Wait until the coolant starts flowing.

Shake the bottle and pour the contents into the cooling system of the running engine. Fill the cooling system to the maximum with coolant (caution: do not overfill) and screw the cap back on. Then let the engine run at idle speed for another 10 minutes or do a test drive.

Check the level, ventilation and tightness of the cooling system after the cooling system has cooled down. WARNING: Do not remove the filler cap when the engine is hot. Recommended dosage: Car: 1 bottle (300 ml) to max.

10 l coolant. Truck: 2 bottles (2 x 300 ml) to 30 l coolant.