Quote:
Originally Posted by nelbur
I have no problem with folks that feel that additives are cheating, but this particular additive does not "coat the internals of the cooling system". This is a particulate that catches in the leak area and builds up there until it stops the leak. It does circulate through the system. My car will have a bit in it so long as I own it. The head gaskets in these engines are problematic but so long as they are only leaking coolant to the outside of the engine, This is my preferred repair.
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What I described is exactly what Barr's does. I've witnessed it several times.
Where do you think the rest of the product goes?
Like most stop leak products this stuff tries to exit the system through the leak and clogs it. The remaining product circulates around the system and finds other spots to adhere to. Hopefully they aren't small coolant passages.
Stop leak products of every kind are temporary and costly Band-Aids. They should
never be considered a repair.