Re: Leaky Rad
sodium silicate (water Glass) is the best stuff for sealing cracked blocks, heads, head gaskets and radiators, BUT FOLLOW THE DIRECTIOND EXACTLY, it works by the sealer coming into contact with air and heat, MAKE SURE ALL RADIATOR TUBES ARE COVERED WITH WATER, this stuff has been used for 50 years or more to seal cracks in the flat head blocks, it really works, most parts stores carry it in a glass jar and it contains ground copper to help seal bigger leaks
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