Repairs cracks in cylinder blocks of cast iron, steel and aluminium, without dismantling.
Stops small leaks/cracks in metal head gaskets.
Assures a permanent repair in 30 minutes.
Wynn’s Cylinder Block Seal is NOT compatible with cooling liquids. It should only be added to water. Do not pour it into oil or directly into the cylinders. See technical data sheet for directions.
Compatibility Engine Petrol & Hybrid petrol, Diesel & Hybrid diesel