nixon5

The gulf station right by my house now has e85 an i am itching to try it because of the price but scared it'll mess up my engine. Is it ok to run the 2.8 on e85?

radical82

Not unless your car is tuned and calibrated to run E-85... Might want to ask at that station to see if they can recomend a local shop to explain what is required and or do the changeover for you....

jensen73110

iTrader: (4)

No.
Not unless you've got massive compression or boost.

If anywhere close to stock, your car won't run on it (or will run like crap). E-85 is something like 100 octane equivalent.

bl85c

iTrader: (2)

It would run fine if calibrated for it. Cr is unimportant. Someone on the diy-prom board is running e-85 (or was for a while), but you need to change out every rubber seal and anything brass that contacts the fuel. It swells when exposed to alchol.

Gumby

They also say to change the gas tank and fuel lines cause alcohol asorbs water n will make em rustout.

But funny haha since the 80s most of all gas has had 10% alcohol and now up to 15% alcohol in some parts. E85 is just 85%alcohol gas.

So it like if you haven't sprung a leak yet, you probably wont.

But ya need to tune for it as it takes something like 3times as much E85

58mark

iTrader: (3)

dont fall for the E85 hype... the gas may be cheaper, but your car will get MUCH worse MPG, making any savings in the cost of fuel pointless

that is IF you could even make it run on it at all...

pointless

bl85c

iTrader: (2)

From what I've heard you just about break even on cost with only a marginal change in power. So yea, it's pretty much pointless. Above a certain concentration of alchol (like 25%?) you start to run into issues with rubber & brass. Most cars since the early 80's were built to tolerate a little alchol.

radical82

You will drop 2 or 3 mpg...just because E-85 doesn't burn as efficiently as gasoline... I use E-85 because of the octane rating, around 102 right out of the pump!!! I build my engines with 12 or 12.5:1 compression and can run them on pump E-85... The drag cars are 13.5 CR and run on E-90, 108 octane... It becomes a matter of economics when running a high compression engine on the street, E-85 is a lot cheaper then race gas and works great for me for the last 5 years... But converting a stock V-6 to E-85 just to save a few bucks at the pump probably isn't going to work out as a savings, unless you plan on running many thousands of miles in it....