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Old 05-28-2012, 05:31 AM
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Iflyglow
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Default RE: cleaned an engine in prestone and it blackened ... what to do ?

ORIGINAL: w8ye

Try boiling it in Vinagar?

If you boil an engine in Prestone it will discolor the aluminum.
The idea is to simmer the engine in (undiluted) prestone, and it works perfect. I do probably 10 engines a year for friends, and I have never ever had a problem.
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