Wynn’s  Radiator Stop Leak is a premium water-based formula that prevents and seals external leaks in the cooling system and prevents head gasket seepage. This low viscosity product works fast but will not clog. Its buffered inhibitors help prevent corrosion and cavitation. A sealing agent lubricates the water pump, which can improve efficiency, and prolong pump life.

Features:

• Protects against coolant loss
• Seals leaks in radiator & heater cores and prevents head gasket seepage
• Will not clog radiator waterways nor affect temperature sensors
• Compatible with water & glycol, anti-freeze/anti-boil coolants
• Compatible with cooling system components

Directions for Use:

1. Set the heater control to the Hot position.
2. Shake the bottle well.
3. Add the contents to the cooling system (Caution: Coolant may be hot).
4. Top up the system with coolant if required.
5. Run the engine for approximately 5 minutes to circulate and stop leaks.
6. The contents will treat a cooling system from 6 to 12 litres.
7. Should only be used as a temporary repair for leaks.

Part number: 68650