There is a tiny tiny crack in the top of the radiator and it's leaking. It had a VERY small bit of white smoke coming from it. So I used AlumaSeal Stop Leak and it's still leaking. Would JB Welding or something like that work to seal the crack?? Or should I just go ahead and order a new radiator? I don't want to keep trying different types of Stop Leak because I don't want to screw up the water pump.
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