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Registered
Join Date: Aug 2001
Location: Savannah, GA, USA
Posts: 653
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I think the problem with oil sitting idle for a long time is that the humidity in the air will condense if the case is cold and settle in the crankcase. How much, i don't know. I don't think new oil will become acidic due to age. Acidity in oil is due to combustion products that sneak past the rings and valve guides.
Mike
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