I've tried this on the same theory that different formulations should have different cleaning properties. I normally use M1 AFE in my Honda K24, but have experimented using PP and RP. Not surprisingly, I have absolutely nothing to report from these tests.
The rationale of common sense (BITOG common sense) that this would work. I don’t think we’ll ever be able to prove it quantitatively until someone has two identical vehicles used in the exact same conditions by the same drivers and are both run to 600,000 miles.
Under normal circumstances, I believe this falls under the category of extreme hair-splitting. Still, I will continue to use the logic.