Liqui Moly Stop-Leak suitable for aluminum and plastic radiators coolant and heating systems with and without water filters: compatible with all conventional coolant additives and antifreezes. Can also be used preventively. It is not easy to find small leaks caused by stone chipping, porous soldered connections or hairline fractures in the cooling system on all water-cooled engines – the only clue is in the reduced coolant level. Radiator Sealant seals these types of leaks completely, easily and in an instant and safeguards the combustion chamber against damage caused by coolant ingress. Just add contents to the cold cooling system: start up the heater and drive the vehicle for at least 10 minutes.
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