How to fill up C300 loaner with E85 flexfuel? - Benzworld.org - Mercedes-Benz Discussion Forum

air4matic · 08-21-2008, 03:34 AM

I got a C300 RW loaner and need to refuel before returning it. Can I fill her up with E85 flexfuel (MB approved) while there's still premium 93 gas in the tank, i.e. mixing them up?

Also, will I get more power with E85 since it has an octane rating of 105?

Thanks!

air4matic · 08-21-2008, 09:58 PM

Does anyone know?

Wiggums · 08-22-2008, 12:52 AM

I don't think anyone has ever done that.. I sure haven't myself.

air4matic · 08-22-2008, 02:26 AM

Looks like it's OK to mix regular fuel and flexfuel...

2008 Mercedes-Benz C300 Flex-fuel test drive - 2008 Mercedes C300 Dual-fuel test drive and review - 2008 Mercedes C300 Luxury road test

jon_jon · 08-25-2008, 01:11 PM

Be aware that E85 gives you a lot less gas mileage. Is E85 a lot cheaper than Premium Unleaded?

air4matic · 08-25-2008, 01:13 PM

Quote:

Originally Posted by jon_jon

Be aware that E85 gives you a lot less gas mileage. Is E85 a lot cheaper than Premium Unleaded?

Around $3.30 per gallon. I'm averaging 22.5mpg on the trip computer for mostly highway driving.

06civicsiguy · 09-01-2008, 02:29 PM

e85 is cheaper and as said before you do get less gas mileage. as far as being able to mix you can do that the ecu will compensate where it has to make it work as long as it is rwd not a 4matic. i personaly hate e85 it was something the big 3 american companys came up with to get money from the government since they have been getting their a**es handed to them in sales for years. yea its cheaper you get less mileage and its actually worse for your engine than reg fuel. i hate the fact that other companies are useing it as an option on their cars. sorry bout my rant just...