Let's not over analize this.
Oil filters are a safety precaution.
Gasoline engines do not need oil filters.
But due to the expense of some of them, the manufacturer
Look at 4 cycle lawn mower engine etc....
I completely and totally disagree; the quality of your oil is directly proportional to the overall lifetime.
With today's oils, debris accumulation is a bigger problem than oil breakdown.
Miniscule grains of carbon accumulate in the oil at a rate determined by ring leakage, cylinder washdown, egr recycling; lots of factors accumulate carbon in our oil, the eventual cleanser of all things interior to the engine.
The filter is the only thing that keeps the long chains of crap out of the bearings.
A two stage filter setup is even better, If you use a finer filter medium in the second filter.
In this kind of a setup, you might be able to go 10k miles on good oil.
By changing the filters...
I get 2500 out of Lazarus at 230k before it loads up with black crap; that's what tells me it's time to go.
I add a half can of seafoam, drive to the store for beer, drain it for a beer when I get back, then the filter will be cool enough to remove.
Cheap Lawnmower engines don't have filters, real engines do; those engines people care about.
My 2-stroke dirt bike does not have a filter. But no oil lasts for two rides, so it works out.
I always change it when I get back.
Red '96 Cougar XR-7 240k mi. '02 4R70W, PST DS : '03 PI engine, 04 maf, 24lb injectors, 2.5" exhaust, '02 4r70w + Jmod, DirtyD0g TC + cooler + 3/8" lines, 255 walbro fp. Alpine system.
Black '96 Cougar XR-7 (Lazarus) 210k mi PI Intake, '02 4R70W, Jmod, PST DS, GrogTune, Konis, Mark LCA+Poly, racecougar Custom Engine Chain, and JL and racecougar Bracing.
Black '97 Tbird Limited Edition, '02 4R70W, 255 walbro, PST DS, PBR Brakes&SS lines, Toicko Blues & Springs, GrogTune.
I'm not Human enough to be human; but I'm trying to fit in, and I'm learning to fake it.
"Never said Hibbity..." - Brian Williams