Can E85 be used in Jeep Wranglers without adverse effects?

Question

I was wondering becasue it is almost a dollar cheaper....I've heard its a bad idea, but I just wanted to get a general consensus. Its a 99 TJ.

Answer 1

Nope. E85 has a high octane rating. You could convert your jeep to run on E85, but you wouldnt be saving any money. While E85 is cheaper, the mpg would drop. By running E85 the mpg would drop by about 8mpg. So if you have the 2.5 4 cyl, your 18/20mpg would drop to 10/12mpg. It wouldnt be worth converting to run it.

Answer 2

No, neither the 2.5l nor the 4.0l were designed for E-85 operation.

While possible, conversion is VERY expensive and you would never be able to get your money back.


Like you I wish it was cost-effective. E-85 is usually $1 to $1.25 a gallon cheaper here in Corn Country. Our Dodge Caravan runs on it, and we lose about 3-4 mpg, not the 30% oil lovers claim.

Answer 3

yes you can do it. BUT it will corrode everything and eventually fail with out a conversion. everything has to be stainless the fuel pump has to be changed out, the ejectors and plugs. (you have to remember its is 85% alcohol) and yes your mileage will drop, but from what I've seen its not 8 more like 6 average. and if in your area its substantially cheaper then i don't see a conversion being that bad of a thing, its like a 110 or so antiknock rating. but if its like it is around here, almost as bad as regular fuel. just stick with the gas.

Answer 4

I'm not going to burn corn in my JEEP!

Answer 5

You can ONLY use E-85 IF your car is equipped for it!
find out here
http://www.e85fuel.com/information/daimler_chrysler.php

and heres why it doesn't make sense to buy it...
http://www.katu.com/news/8340832.html

Diesel and Biodiesel are another story....