K-Seal sealant

Solv-Tec's K-Seal selant makes permanent repairs to cooling systems on all types of vehicles. The unique ceramic/copper formula mixes with all types of antifreeze; just shake the bottle and add the contents to the engine coolant in any gas or diesel engine. K-Seal will stop most leaks in the block, head, radiator, heater matrix, freeze plugs and the head gasket. One 8 oz. bottle treats cooling systems up to 20 quarts.