Continental oiling

Also, if this is correct, a dirty oil filter (high restriction), or thicker oil would guarantee more oil getting retained in the oil galley (mains, rods, etc..) where it can do some good.

Someone please comment on this, am I right?

Since the pressure relief valve relieves directly to the crankcase, not through the bypass filter, a plugged filter or heavy oil doesn't change the oil pressure set by the presssure relief valve and so doesn't change the oil volume available to the crankshaft and cam shaft. But a plugged filter doesn't pass any oil either to do any further filtering.

On the more recent full flow filter systems the oil does get filtered every pass through the pump, but if the filter gets plugged up, the engine looses its oil and that can be fatal to the bearings. Some full flow filter systems have a filter bypass valve to pass oil to the engine if the filter gets clogged, but then that oil isn't filtered at all.

Gerald J.

My brothers friend has a MF50 that spun a rod bearing. Disassembly revealed a crushed oil filter. I am curious if the failed filter had something to do with the spun bearing, failed for the same reason as the bearing, or was merely a coincidence...