The reason many of the manufacturers don't have a lot of concern about the bypass section as it rarely comes into play. If the full flow part becomes completely clogged, usually by negligence, then the oil goes through the bypass section in order to prevent oil starvation in the engine.
You are describing a bypass valve, not a bypass filter. The bypass section of the filter is always working.
03-06-2008, 01:11 AM
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