Cooling System Stop Leak Irontite 16 oz

All weather seal ultimate fix for head gasket and radiator leaks. Seals intake and head gasket leaks, seals cracks in cylinder head and engine blocks, prevents antifreeze seepage through gasket and hoses, and lubricates water pump seals. Stops leaks in Cadillac's Northstar Engines. Ideal for all weather conditions. One bottle treats up to 6 gallons. HD trucks will require several bottles. Mixes with all anti-freeze. Add directly to radiator.