Liquid Copper Block Seal

Posted on October 23, 2009

Liquid Copper Block Seal permanently seals large leaks in gaskets, radiators, heater cores and intake manifolds. The solution features an antifreeze-compatible formula, so it is not necessary to drain the vehicle's cooling system. Once Liquid Copper is poured into the radiator, users should idle the engine for five minutes, let it cool and top it off with coolant.  

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