Due to prices in excess of ~$3.20/gal for premium out here, I've been looking deeply into E85 fuel. I have an '05 V6, and I'm planning on running half 87 octane, half E85. Just while gas prices are up. E85 costs $2.20 a gal out here. I know that the car can't run straight E85, how would running a half and half effect the engine, if at all? According to my calculations, 87/E85 would put me at about 95-96 octane, I don't see that as being an issue with my 91 tune. Input anyone?

 

You might want to go ahead and flash in a 93 octane tune, if for no other reason than freeing up another few ponies. I can't see much of a safety issue considering it's not terribly hard on a stock 87-octane tuned car to run 91.

E85 is pretty sweet stuff. 105 octane! Think about the kind of boost you could run with that. It's practically race fuel.

 

Alright, the experiment is underway. I'm running half 91 octane, and half E85. The engine seems to not have to work as hard for the power, and it's more responsive. The 91 cost $3.29/gal, and I picked up the E85 for $2.20/gal. Seems to be working fine, no check engine lights or anything else.

 

The possibilities of E85 are awesome. I wonder if a qualified tuner could tinker with a blown car to run 100% E85 safely. If so you could make big block power with a 4.6l, get gas ecnonomy comparative to a big V6, and run fuel 2/3s the price of mid-grade.

 

I'm sure they could. However, there would have to be some modifications done to the fuel system to accept the E85, which is more corrosive than gasoline. Which is why I'm doing the mix.

 

Ok, used the whole tank of the mix, I got 18.4 MPG. I normally get 17.5 with 91 octane.

 

i wish they had some stations around Orlando with e85, i did a science project on alternative fuels last year and since then i've been searching for Bio-diesel and e85 for my parents cars

 

85 octane??? bwahahahah

 

Alright...for the dumb blonde...can someone pelase inform me of what E85 is? Much appriciated

 

E85 is 85% Ethanol and 15% Gasoline. It's actually 105 octane

 

E85 in NY is 86 octane

 

At first I was a bit confused by you saying 100% E85 since E85 is a 85%/15% mix.

I would check with a technician at your dealership before continuing to run your mix in your Stang, just as a safety precaution.

Ford has been producing FFV (Flex Fuel Vehicles) for years now. You can find FFV engines available in Taurus's, Rangers, and Explorers. All of the factory engines are able to run on staright gasoline or E85 without having to change any tuning.

 

bwahaha doug!

Let's do some research in the future to prevent future incidents of public embarassement.

 

Okay. I just checked with a master technician. He said you should NOT run E85 in your Mustang regardless of the tune. It could internally damage your engine.

If you want to save some money run regular or mid grade for now. The Mustangs are made to run on regular octane.

 

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