PUP 0w-20 (GM dexos1) vs. M1 EP (GM dexos1: Gen3)

[Triple_Se7en]

What do you mean by keeping up with a paper engine air filter?

Dirty air filters that no longer accept what's needed for trapping, eventually accumulate dirt in your oil filter. So depending on design, good air filters that are changed appropriately keeps your oil cleaner.

One hand washes the other.