BlueDevil Radiator and Block Sealer is an easy-to-use formula that will repair and seal leaks in radiators and engine blocks. It does not contain solid or fibrous materials and will not clog or harm cooling systems. It will bond to plastic, cast iron, aluminum, alloy, or metal. BlueDevil Radiator and Block Sealer is compatible in gasoline and diesel engines. It is a guaranteed permanent repair.
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