Octane rating
Thread Starter
Member
Joined: Nov 2020
Posts: 82
Likes: 5
2006 E350 4MATIC Wagon
Octane rating
I know these cars call for premium, which is anywhere from 91 - 93 octane. Given the choice, would 90 non-ethanol work? I know about knock and octane. I have also run mid-grade in my BMW’s (e46 and e39) without issue. Is it the same for E500’s? Just curious because there’s a station near me that sells non-ethanol for around the same as 93 ethanol and it’s the only station near me that sells something higher than 89 non-ethanol. It’s a Citgo brand station; usually I use Shell.
Thoughts?
Thoughts?
MBWorld Fanatic!
Joined: May 2022
Posts: 1,917
Likes: 499
From: The Netherlands
2005 CLS55 AMG W219 C219
Try it out and maybe check measurements (knock sensors, fuel trims etc). You can always add bio ethanol yourself, I did that in the past with another car. It was mapped on E98 with 7L bio ethanol,
