There was some discussion about the filter being able to drain from the bottom when sitting. I am preparing a filter canister that I got off a 1951 216 in a truck. In this model, the bottom fitting is connected to the central tube and there is a restriction in the bottom outlet fitting. However, the only way for oil to pass into the center tube is through one tiny hole, up about 3/4 of the height of the tube. So I see two outcomes from this layout. First, the can will never drain just sitting there and number two the primary restriction is very small and is located on the side of the central tube. Oh, and there is a separate drain on the bottom of the can for servicing.
