E85
Thread Starter
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Joined: May 2015
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e350 4M
E85
our E350 says it's dual use for Premium or E85.
What's the deal with filling up on E85? Should the premium tank be almost empty to put E85 into it, can Premium(91/93) mix with E85 at any volume?
E85 is significantly cheaper than premium, but I'm also assuming *** mileage will suffer with E85?
Anyone using it? Any bad long term effects on the car?
Thanks
What's the deal with filling up on E85? Should the premium tank be almost empty to put E85 into it, can Premium(91/93) mix with E85 at any volume?
E85 is significantly cheaper than premium, but I'm also assuming *** mileage will suffer with E85?
Anyone using it? Any bad long term effects on the car?
Thanks
Senior Member
Joined: Aug 2014
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From: Dallas, Texas
2015 S550 4MATIC
My Merc does not take E85, but I have another vehicle that does. You need to fill up with E85 when your tank is empty. Even though E85 is cheaper... it is about 20% less efficient because it burns cooler and faster. In the long run.... it's about the same. IMHO 
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e350 4M
is there a performance benefit to E85? not that i'm going to race a family sedan but i know a lot of subaru guys (our other car) convert their wrx/sti's to E85 for performance gains.
i think we're just going to stick with premium and forget the car is also an E85 altogether, just wanted to see if anyone actually uses it.
i think we're just going to stick with premium and forget the car is also an E85 altogether, just wanted to see if anyone actually uses it.
Senior Member
Joined: Aug 2014
Posts: 323
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From: Dallas, Texas
2015 S550 4MATIC
is there a performance benefit to E85? not that i'm going to race a family sedan but i know a lot of subaru guys (our other car) convert their wrx/sti's to E85 for performance gains.
i think we're just going to stick with premium and forget the car is also an E85 altogether, just wanted to see if anyone actually uses it.
i think we're just going to stick with premium and forget the car is also an E85 altogether, just wanted to see if anyone actually uses it.
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2010 E350 Luxury Sedan, Engine 272 (V6)
Good idea
is there a performance benefit to E85? not that i'm going to race a family sedan but i know a lot of subaru guys (our other car) convert their wrx/sti's to E85 for performance gains.
i think we're just going to stick with premium and forget the car is also an E85 altogether, just wanted to see if anyone actually uses it.
i think we're just going to stick with premium and forget the car is also an E85 altogether, just wanted to see if anyone actually uses it.
The only purpose of ethanol, E90 or E85, was to lessen need for imported oil, and that is no longer an issue.
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2020 E450 Wagon
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I ride a motorcycle and belong to the AMA who is fighting the EPA on E85 without providing independent testing on the results of E85 on small engines.
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2010 E350 Luxury Sedan, Engine 272 (V6)
Still not the "government"
Contact your Congress person and Senators.
Actually, the auto industry has been fighting E85 for a long time, but with no success.
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2010 E550, 273 Engine: 2012 S550, 278 Engine
MBWorld Fanatic!
Joined: Oct 2010
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From: Southern US
2010 E550, 273 Engine: 2012 S550, 278 Engine
You can fill E85 to the tank at any tank level. E85 enabled car can run fuel with ethanol from 0 to 85% so if you want to experiment with it you can start with filling up when your tank is 3/4 full then at half tank then at 1/4 etc.
I had the Tahoe with E85 capability and I did fill up a few times. Result was that the fuel mileage went way down and the car felt missing power.
Ethanol has less energy per volume compared to gasoline so fuel mileage per gallon is down just for that reason.
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2010 E350 Luxury Sedan, Engine 272 (V6)
Stand corrected
E85 is even worse than I thought. Guess my confusion is that the ethanol lobbyists/producers are pushing for 15% ethanol at all retail sales locations. However, EPA reportedly is backing off from that somewhat.
Still, it is Congress (politicians) who enacted the legislation for EPA to require E15(?) by this year.
The ethanol lobby is fighting it hard though - and they have big bucks.
The ethanol lobby is made up of agribusiness, ethanol refiners, railroads, companies that make railroad tank cars and tank trucks, trucking companies, pipeline companies and so on. So, it is a big group.
Still, it is Congress (politicians) who enacted the legislation for EPA to require E15(?) by this year.
The ethanol lobby is fighting it hard though - and they have big bucks.
The ethanol lobby is made up of agribusiness, ethanol refiners, railroads, companies that make railroad tank cars and tank trucks, trucking companies, pipeline companies and so on. So, it is a big group.
