Here’s some useful info for anons I just learned about after taking my car in for maintenance:

You need to put additives in your engine oil- the EPA did one of their crap environmental mandates and oils are now “dry” and don’t lubricate as they’re supposed to. They didn’t like the zinc and phosphorus killing their catalytic converters so they’re killing our engines instead.

Go ahead and smirk about the link, but they explained it well.

https://teresasgarage.com/automotive-411/zincs-removal-from-engine-oils-and-its-effects-on-older-engines/teresasgarageonlinestore