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Bar's Leaks 1109 Liquid Copper Block Seal and Radiator Stop Leak - 18 oz.
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About this item
- ANTIFREEZE COMPATIBLE - NO NEED FOR DRAINING: This sodium silicate liquid glass that works with antifreeze effectively seals both minor and major leaks in various materials including plastic, aluminum, cast iron heads, engine blocks, intake manifolds, gaskets, freeze plugs, heater cores, and radiators.
- ONE STEP - POUR DIRECTLY INTO RADIATOR - EASY TO USE: Fiber additives lock together with liquid to increase strength and promote a permanent seal. It will not harm the coolingsystem when used properly, no draining is required.
- PERMANENTLY FIXES COOLING SYSTEM LEAKS: . One step formula permanently repairs coolant loss problems on cars, trucks, vans, SUV’s and RV’s.
- USE WITH ALL TYPES OF TRADITIONAL OR EXTENDED LIFE COOLANT: Use with ALL types of traditional or extended life coolant including yellow, orange, pink, red, blue, purple and green silicate based & non-silicate based (OAT/HOAT) 50-50 mix antifreeze, and/or water.







