Originally Posted by Ed_Flecko
Originally Posted by CR94
Originally Posted by Ed_Flecko
... TRD is the ONLY filter (that I've seen, for this application, at least) that has the rubber O-rings? What purpose do they serve? ...
Should seal better against the hard flat surface of the filter housing than a cartridge filter with a hard flat surface on its end.
... In other words, 100% of the oil flow gets forced through the filter media as opposed to perhaps not sealing completely and *some* of the oil is not filtered? ...
Yes, exactly. When the ends of the cartridge and the ends of the housing that they mate against are all rigid, the geometry of both must be perfect, or else a little oil can bypass through gaps at the ends.