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Published on Jul 14, 2011
Bar's Leaks® Liquid Copper™ Block Seal Intake & Radiator Stop Leak seals larger leaks regular stop leaks won't. One step formula permanently repairs leaks in gaskets, radiators, heater cores, intake manifolds, blocks, heads and freeze plugs. Use on cars, trucks, vans, SUV's and RV's. Contains an antifreeze compatible sodium silicate liquid glass formula, so no draining of the cooling system is required.