A unique formula specially developed to permanently repair serious head gasket and porous block problems. Wondering if coolant leak sealants really work Makes repairs on the head gasket, block, water pump casing, freeze plug, heater core and radiator.
K-Seal ST5516 Radiator Sealer, Antifreeze Cooling System Engine Sealant
Mixes with all antifreeze to stop existing and future leaks
Do not add to engine oil, transmission or brake fluid
Activation happens when both heat and air, under mild pressure, is encountered by the solution One bottle treats up to 6 gallons Hd trucks may require additional bottles.
