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From the E-85 Wiki

The use of E85 in standard gasoline engines may require some minor engine and fuel system adaptations, as the use of ethanol blends in conventional gasoline vehicles requires a different air/fuel ratio than conventional gasoline and can be corrosive, degrading some of the materials in the engine and fuel system in pre-1980s vehicles. Tuning the AFR along with adjusting the timing and compression ratio as compared to a gasoline engine is also desirable in order to take advantage of ethanol’s higher octane rating, thus allowing an improvement in performance and fuel efficiency and a reduction of tailpipe emissions. Flexible fuel vehicles (FFV) in North America and Europe are designed to run on E85. Most standard engines can be adapted to run on E85 without any problems.
 
Yeah I run it in mine all the time, I mix it ~1/3 of a tank to 2/3 tank of 87 octane.
That said, my truck has no computer, it is carbureted with a Carter AFB (think;Edelbrock) that is admittedly jetted a lil rich as I got the carb, for my application.
If I go to Indiana I'm more likely, as there vis a greater difference per gallon; here in IL there is little difference not enough to justify; but everyone claims less MPG; mine actually improvesa bit on E 85 and my part throttle ping when loaded or towing also goes away on E 85.
 
I've run up to 33% e85 in my Jeep, just drove a little slower than normal. with that said, they price it too high. At exactly the equivalent of what 1 gallon of gas would be if it was watered down with more ethanol to get to E-85, so you aren't saving any money other than getting it for its octane use instead of paying extra for the 91 octane.
 
well in my case, when I can get it cheaper than regular, my part throttle under load ping disappears when I have some in the tank, it does..... what I don't understand, is that here its like only $.20/gal cheaper; I go to Indiana its at least $.50/gal cheaper than gas sometimes more; and other states I have neen in its nearly $1/gal cheaper; but I agree at $.20/gal difference its hardly worth it.
 
The price at the pump may be cheaper but even if you don't buy any you pay for it through tax subsidies.
E85 is a joke anyway. It takes more than a gallon of dino to get a gallon of corn squeezins and the gallon of alky has less power output than a gallon of gas.
 
Unless you are tuned for it and have the fuel system set up for it, there is no benefit in running it.
+1, not only that, you could also damage you fuel system and engine, as the non-E85 engines will have fuel line, seals, gaskets, and combustion chamber problems from running E85 in a non-E85 drivetrain.
By the time you are done, you will probably have the down payment on a used 2005-2007 Dakota 4.7 standard output or a 2008-2011 Dakota 4.7, as there are no companies that offer the parts needed to run E85 in non-factory E85 drivetrains.
 
The price at the pump may be cheaper but even if you don't buy any you pay for it through tax subsidies.
E85 is a joke anyway. It takes more than a gallon of dino to get a gallon of corn squeezins and the gallon of alky has less power output than a gallon of gas.
I have to disagree on that! The e85 makes more power output that reg gas but the problem is the mpg sucks! Way less than regular gas!!
 
I have to disagree on that! The e85 makes more power output that reg gas but the problem is the mpg sucks! Way less than regular gas!!
It's not that E85, or straight alcohol for that matter, makes more power per gallon, but E85 allows you to run more timing and higher compression allowing the car to make more timing on it. The actual energy potential isn't the same.
 
Ok, hers a question..... If I'm supercharged, which imam, and pretty much all the fuel system components are aftermarket and compatible with straight alcohol, would imbe able to run e-85? I can tune my a/f as well....
 
Interesting....... Almost 100octane for cheaper than 87............. Once I get my wideband I may switch over......
 
I have to disagree on that! The e85 makes more power output that reg gas but the problem is the mpg sucks! Way less than regular gas!!
I'm guessing he is talking about how Ethanol has a lower BTU rating than gas which means you need to inject a larger volume of it into the engine to make it work right. So therefore you use more.
 
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