K-Seal HD radiator sealer - 472ml

Just shake the bottle, add the fluid to your coolant system, and run your engine as normal. 

K-Seal’s unique formula will seek out holes and cracks, and permanently seal them, with no adverse impact on the efficiency of your engine cooling.

K-Seal HD can be used in hot or cold engines, and is specifically designed for the more powerful engines found in HGVs, tractors, trucks, and other commercial vehicles. The entire bottle should be used.