Quickly and effectively seals critical hairline cracks and small leaks in all water-cooled, closed cooling systems. Does not clog and can be used on defective water coolers, leaky water pumps, heat exchangers, thermostats and radiator hoses. Compatible with all types of coolant (inorganic, hybrid, low-brid & OAT).

A can of MOTUL RADIATOR STOP LEAK should be added to the coolant at operating temperature if necessary. Switch on the heater and set it to maximum heating output. Let the engine run for approx. 10 minutes at operating temperature. Then check the coolant level and top up if necessary. If the level remains constant within the target range, the cooling system is sealed.

Caution: Open the cap on the expansion tank slowly and gradually - the system is under pressure, risk of burns!

300 ml is sufficient for up to 12 liters of coolant.
2.1. Classification of the substance or mixture Complies with Regulation (EC) No 1272/2008 and its adaptations. This mixture does not pose a physical risk. See recommendations for other products on site. This mixture does not pose a health hazard, except in the event of exposure limits being exceeded in the workplace (see sections 3 and 8). This mixture does not pose an environmental risk. Under normal conditions of use, no harmful effects on the environment are known or foreseeable. 2.2. Label elements Complies with Regulation (EC) No 1272/2008 and its adaptations. No labelling is required for this mixture