Sealant for cooling systems. Effectively protects the cooling system and the cooling channels of the engine against sealing damages
Suitable for all cooling systems of gasoline and diesel engines. Also for closed cooling systems
Fully compatible with all types of antifreeze and coolants
Direct effect Valvoline Cooling System Stop Leak has an instant effect after application
Secures operation of cooling system: effectively prevents coolant loss by sealing hairline radiator cracks and preventing sealant sweating. Does not block the cooling channels
Long-lasting result: designed for long-lasting sealing of hairline cracks and leaks
Easy to use: application through simply adding it to the coolant in the radiator. No specialist tools or equipment required
For full details of the delivery options we offer, please view our Delivery information page
We hope you’ll love every purchase, but if you ever need to return an item you can do so within a month of receipt. For full details of how to make a return, please view our Returns information
