[Mike V. Florida]

Originally Posted by Bob-A

I was under the impression that non-filtered
oiling systems used non-detergent oil. So any contaminants in the oil would drop out into the pan before the oil was recycled back through the engine.
And detergent oil suspends any contaminants within the oil so it can be picked up by a filter. I don't know how true these are, but they are what I go bye.


Bob-A

You have stated the theory correctly.