I like the idea I must say. I know that the Landrover Disappointment has a centrifugal oil spinner tun by oil pressure that spins out the soot and dirt meaning that the oil only needs changing at something like 20k. Nice idea. Shame that they didn't blag that idea instead of a simple filter medium.
If it really meant that you didn't need to change your oil until 10k or something it would pay for itself I guess in a relatively short period for a high miler.
Have you thought of trying the higher quality OEM oil filter that's available? Supposed to have larger media and finer filtering and is what it came from the factory with but isn't used as standard after that to keep the standard OEM oil filter competative on cost apparently.
Is a finer filter as used from the factory coming to have any detremental impact on flow, with a pump that has some wear? For example my truck has 90k miles on it and so pump pressure will be different to a brand new oil pump.
I only noted the part number for a petrol 100 but if you search ih8mud with 90915-20004 it'll turn up some threads on the subject. Remember they're mostly talking about petrol engines over there but there are one or two references to diesels from Canadians usually.