Detergent oil

[Y-Blockhead]

Originally Posted by Railcarmover

I see the full flow as the answer as well Y Block...just wonder if flow and pressure should be improved before adding the restriction of a filter.

I believe the stock Model A oil pump, being a positive displacement pump, is more than capable of putting out more than enough pressure to overcome the restriction of an oil filter. The reason a stock Model A without filter has low oil pressure is the pump is pumping into a open space, the valve chamber, without any back pressure.

We sure have traveled far from the original question...