I was not asking if anyone has EVER used stop leak. I have used it very successfully for almost 50 years I was asking if anyone had used it in the members car that was having a problem
Stop leak doesn't work so well with a radiator leak but is great for a leaking head gasket or intake gasket. It will not do anything for a bad water pump.
K&W heavy duty block sealer is the absolute best but you must follow directions without trying to cut corners.
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