Small leaks caused by stones, or porous solder joints and hairline cracks in the radiator system are not easy to locate (you only notice the decreasing cooling water level). This product completely and effortlessly seals leaks of this kind. Protects the combustion chamber against damage caused by coolant ingress. Compatible with all common coolant refiners and antifreeze. Areas of application: For all coolant and heating systems with and without water filter. Also suitable for aluminium and plastic radiators. 150 ml sufficient for 10 l of coolant.