Re: Does Barr's Radiator Stop Leak reallly work
I always tell everyone that asks me about that stuff not to use it or any other kind of stop leak. The stop leak does not know where the hole is at and it sticks to everything causing your cooling system to be less efficient. This is not the problem you want to have on a flathead assuming that is what you have. Best thing would be to have it pressure tested and brazed or patched in some way.
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