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Re: Soft plug
My friend had a 1991 S10 with a 4.3 always had a anti freeze leak behind the bellhousing,we had to pull the tranny and everything,changed the frost plug and good to go a year or so later started leaking again,so we pulled it all apart but this time we felt around inside the block and found a piece of casting flash that was plugging up with antifreeze gunk ,and was causing the steel plug to get pinholes in it,,gently tapped of the flash and like Aussie says,a little Permatex,tap in flush with the block,and no more leaks in 10 years.
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