Info on Filters. Oil, fuel, air.

[C. Ludwig]

Originally Posted by Barry Bordes

I think you meant to say that the oil comes into the side ports of the filter and clean filtered oil is fed through the center.

Also any "dirty oil" from the inlet is also poised at the bypass valve (directly below it in the pan) ready to contaminate your cleaned oil if the bypass is opened during cold start-up. If you have a direct reading gauge you will see this happen at about 105-110 PSI (3rd Gen). During warm-up it is important to try to avoid this.

Barry

I knew I would get that wrong.

Any dirty oil that is bypassed by either regulator is just falling back into the pan with the rest of the dirty oil. Not sure I see the issue there.