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Old 08-08-2013, 05:59 AM   #9 (permalink)
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Someone in India claimed to have mixed boric acid powder into engine oil, after grinding it down very fine, and got good results. I can't remember now where I read that.
Inspired by that, I got some boric acid and put it in my car's differential and wheel bearings. with no noticeable results. I never tried putting it in engine oil though.
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