- Joined
- Nov 29, 2009
- Messages
- 7,216
So back in 2001 many car makers moved from 5w30 to 5w20 and people thought things like oh they changed the tolerances to accept the thinner oil. Now here we are and last time I checked, US cars sent to places like Africa or Australia will run off of 5w40 or even 15w40. I'm just curious how many people deviate from the owners manual on oil grade and just run 5w30 like pre 2001