E85
Thread Starter
Newbie
Joined: Feb 2019
Posts: 7
Likes: 0
2005 E500, 2017 GLS550
E85
Anyone running E85 (with a proper tune of course)? Curious how it worked for you and if you liked it... E85 is plentiful around here in MI and the cost is much less than 93 octane plus there's the performance side.
2017 GLS550
2017 GLS550
Senior Member
Joined: Jun 2012
Posts: 409
Likes: 22
2008 GL320CDI (310k) & 2017 GLS450 (160k)
Do you know if the fuel system of GLS can support E85? I've been running this fuel for many years in my almost 30yo hobby vehicle, with upgraded fuel pump and lines. E85 is a great race gas replacement.
Thread Starter
Newbie
Joined: Feb 2019
Posts: 7
Likes: 0
2005 E500, 2017 GLS550
Flex-Fuel Tune
I guess I should have worded that better. I can get a tune that runs 50% E85 and 50% 93 octane blend. To my knowledge The GLS does not support full E85.
