Date: 16 Oct 2001 19:47:18 GMT From: saab85900nopsamcom (Saab85900) Subject: Re: Can I reduce oil changes with a bypass oil filter?
>Excuse me, but what is a bypass oil filter? There is already an oil >filter; the oil is forced through the filter. The oil filter is always >changed at the same time the engine oil is changed, I certainly hope so. >I can't see the point, or is it just me? A bypass filter is a second filter added to the oiling system. It takes a small percentage of the oil which is flowing and sends it through an extremely fine filter. A standard full-flow filter is usually quite effective in the 20-40 micron range, and won't take out water. At least some bypass filter elements will remove particles less than 1 micron, and also remove water. Without water, it is very difficult to make acid. Without the solids and acid, the oil will remain serviceable for a much longer period. Many large diesels have been using bypass filters for many years. Dick in Falls Church
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