Recently got a 2011 5.0 so it's Flex Fuel. I thought I would throw a tank of E85 in to see how it does and what kind of mileage I would get.


With regular gas (10% ethanol) I was getting about 17-18 mpg. With E85 on this one tank I've been getting 13 mpg.


I mainly drive back and forth to work, so mild stop and go. I feel I'm getting good mileage considering with either fuel. When I filled up with the E85 the price differential was $0.50. I calculated the price per mile and if I did it right I'm breaking even. Last night the price differential went up to about $0.75 so if I fill up again I will be saving money with the E85.


I don't really get on it much but performance wise it seems to have a little more pep. I realize it's a higher octane but I find it hard to believe that Ford would map out the truck to have better performance with E85. I'm sure it's an illusion but throttle response seems better.


Just wondering if others are running E85 and what kind of results your finding. I'm not really wild about using food for fuel and considering E85 receives huge subsidy's and hate how political it is, but when the price differential is over $0.50 it's hard to pass up saving money.

 

It is reasonable to get lower mileage with E85 since ethanol has about 30% lower heating value gasoline.

You may also get better performance because the engine ca n accept the higher octane and get the benefit of the high compression ratio more often.

But don't forget, somewhere in the background the ethanol is subsidized by the taxpayers, and does not reduce greenhouse gases like the proponents say.

 

You throw a tune with headers, 3"exhaust, mass air sensor, throttlebody ; massage the intake.....that 5.0 will fly on E85. Thing is, your gonna loose some mpg's- but it's fun!

 

Running stock with E85, my average MPG dropped from 19 to 12. I've got an E85 race tune, haven't tried it yet.

 

Let us know! That should be awesome. :getyasome: