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Anyone have any more details on the bypass valve opening pressure for Mahle filters (or other brands')? The bypass feature is what has kept me from getting comfortable with using stock-type cannister filters on my racecar - oil pypassing the filter element not only on startup / cold oil but also at high RPM / high flow situations.
I think I've read that the bypass valves open at 20-30 psi? This is of course less than the oil pressure in the oil galleys in the engine, but you might expect the pressure to be less in the filter due to the larger volume there (PV = nRT) ...
Last edited by stownsen914; 10-29-2015 at 04:17 AM..
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