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Old 10-03-2010, 07:58 AM   #7
JFP in PA
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Join Date: Feb 2005
Location: It's a kind of magic.....
Posts: 6,614
There are multiple potential sources for plastic in the oil; most common ones are the rub surfaces on the chain guides (usually black in color) and gasket materials (often green in color). The oil pump is all metal, so it is not from the pump. You also occasional find bits of dark plastic from the sump baffle assembly.

You appear to have bits of gasket/silicon in the oil.
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