From: Ryan M Gill (rmgill@mindspring.com)
Date: Tue Mar 18 2003 - 08:12:10 PST
At 10:06 AM -0600 3/18/03, Mel Miller wrote:
>Howdy Fred,
>
>For over at least forty years there have been bypass filters using rolls of
>toilet paper or paper towels to filter crankcase oil. If they are correctly
>engineered they work very well.
One of the Chaps in the GAMVPA (really a Jeep club but what the hey)
brought in the (certainly carcinogenic) remains of a WWII era Jeep's
oil filter. It was rusted through, but had what appeared to be string
and rags that had been packed into the casing.
>I would not consider putting such oil back into an engine unless your engine
>uses a lot of oil and you have to constantly replenish. The trace elements
>of oil additives in the petroleum companies 'formula' for that oil may have
>been consumed. One way of determining whether or not you should reuse the
>oil for its intended purpose would be to send a used and new sample of the
>oil to an analysis company and ask them to see if the 'additive package' is
>still intact in the used sample.
Plus the lubricating polymer chains are most certainly sheared to
shorter and less lubricating lengths.
Burning the filtered oil is probably not a bad way to get rid of it
(it could have pollutants in it?) however, filtering it and putting
it back into your engine isn't such a good idea.
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