Oil Flow Diagram

[salguod]

I'm looking to understand the oil flow in my 1996 M44. Is there a diagram available anywhere? I've searched and not found one.

Long story, I'm in the middle of changing my oil filter housing gasket and I broke off the bottom, front bolt. Two bolts evidently had corroded and were thin in the center. I failed to inspect them and one broke upon reassembly. I know this now from inspecting the remaining bolts. There is maybe 1mm protruding from the block, not enough to grab and drilling this out will be very difficult. I'm not sure I can get a drill down there.

However, this corner of the housing is very clean, no dark oil staining like other parts. It seems that very little oil gets to the bottom, front corner and I'm contemplating heresy - putting it back together with only the 5 remaining bolts. If my suspicions are correct, there should be very little to no leaking there. However, I'm not really sure where the oil is pumped to and from here.

Can anyone provide a diagram or some insight? Is oil pumped into the center of the filter or to the outside of the filter?