Bardahl Radiator Stop Leak (500 ml)

Bardahl Radiator Stop Leak is a 500 ml cooling system additive designed to seal leaks in the radiator and heater core without dismantling. It also helps prevent rust, scale and corrosion. The formula is compatible with hoses, seals and the metals used in cooling and heating systems.

How to use: With the engine warm and switched off, set the heater to maximum. Shake the bottle vigorously, then add the contents to the radiator or expansion tank without exceeding the maximum fill level. Run the engine at idle or drive normally for 15 minutes with the heater still set to maximum.