Because GM and Mopar are shit in comparison. The lifter issues are nothing new, been a problem since 2016+ when the 5.3L first started recommending 0W20, yet they keep cranking out the same underengineered garbage. Unless you need a 2500 series pickup, those brands should be avoided.

Toyota has used 0W20 for decades now and the engines and fuel mileage are still industry leading so 0W20 it is. 0 weight oils flow best cold for start up lube anyway

Pennsoil Platinum High Mileage 0W20. It seems to run best on it, at least among the wal mart oils.

I debate Amsoil or LiquiMoly every oil change but $50 for 5 qts is just madness to me.

I compensate by using expensive filters.

40,000 more miles and I too will join the club