[Sirrotica]

Originally Posted by Firebob

I have to wonder that if the filter media is working that good in a by-pass filter system, how hard does it work the pump to push enough oil through?

It has a 1/8 inch restrictor that feeds off any oil pressure port. The oil feeds through slowly so it gets filtered completely and just returns to the sump. Cleaning oil to this standard can only be done slowly and since the by pass system has no bearing on oil pressure to internally oiled engine parts it has no by pass valve to open under extreme conditions as the compromised full flow system must have.

It is a closed system that takes a small portion from the oil system that would be by passed by the pump and does an excellent job filtering and returns it cleaned to the pan. It processes 4 quart in 5 minutes so in 6-7 minutes it will filter all the oil in the system once. Since the system uses oil that would normally be sent back to the pan by the oil pump by pass valve it has no effect on oil pressure. All oil systems have more than enough oil in reserve that bleeding of a minute amount for the by pass system has no ill effects.

Picture of by pass filter system: