What octane is everyone running on their cars? I know the minimum is 87 octane, with 91 recommended and 93 recommended for M cars.
I’ve ran 87, 89, and 93 octane and have felt no performance difference. Also, I don’t hear any knocking on any octane thanks to the knock sensors.
Car is a g20 m340i with a b58.
This happened recently to Mat Armstrong taking his tuned RS6 to SEMA.
No issues up until he filled it with lower octane fuel than what the tune allowed. Caused pre detonation and blew the wall of one of the cylinders out into the cooling jacket. Hydrolocked the engine.
Expensive mistake.
https://youtu.be/cgZIJEsRmFg?si=rtB5SxXa4-jkPgf-
These damn poverty states only having 91… like wtf, get with the program.
California gas is oxygenated to reduce emissions. It’s supposedly better for their air.