Bar’s Leaks Liquid Copper Block Seal Intake & Radiator Stop Leak is the bestselling formula permanently repairs larger leaks in radiators, intake manifolds and gaskets, heater cores, blocks, heads and freeze plugs. It contains an antifreeze-compatible sodium silicate liquid glass formula, so no draining of the cooling system is required. Not to mention, it will not harm the cooling system when used properly. It is far more effective, easy to use, and less expensive than you’ve ever imagined. Fol
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