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Discussion Starter #1
New York has mandated the replacement of MBTE in gasoline with 10% ethanol. Recently, I took a 500 mile round trip in my E150 with a 4.6. I filled up just after leaving and again on the way back. On the way back I noticed that the pump had a sticker on it that said that the gas had 10% ethanol. Several things happened on that trip: my van ran poorly until it reached normal operating temp., my gas mileage dropped from 18 to 14, my MIL lit up with a long term fuel trim too rich. I reset the MIL with my scan tool and have avoided E10 since - no problems.

Even though the Ethanol folks claim that E10 will fix everything from better gas mileage to increased libido and immortality, from what I read there are a large number of possible negative issues with E10. Some are listed below:

1. Ethanol is corrosive and may cause increased wear on some metal engine parts.
2. Ethanol eats some plastics and rubbers. Many of the parts in tbird fuel systems are made of rubber and plastic such as filler and vent tube connectors, high pressure fuel lines, plastic injectors and o-rings, fuel pump parts, fuel filters.
3. Mixing E10 with MTBE fuel can cause a sludge to form in the fuel tank.
4. E10 soaks up water and separates from the gas causing an ethanol/water layer to form below the gasoline in the fuel tank.
5. E10 reduces gas mileage because it contains oxygen that "fools" the O2 sensors into thinking that the mixture is lean. This causes the ECU to richen up the mixture lowering gas mileage and possibly causing the long term trim to get far enough out of whack to light the MIL.

I own five '89 - 97 tbirds and an 03 E150 and am loath to put this E10 in them until some of these issues have been addressed so I ask you - what is your experience? Are there any E10 safe parts available for tbird fuel systems? Are there any E10 tunes available for EEC-IV and EEC-V systems?

Any and all info and help are appreciated.
 

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I'll share my E-10 experiences. I bought my '94 T-bird in '99 and have used E-10 from day one. It was the cheaper of the 2 gases so being that I am cheap, I buy it. My car has run very well with E-10. On the interstate it will get 25 m.p.g. plus at 75 to 80 m.p.h. Since it is on the corrosive side, you may want to introduce it to your cars alittle at a time. If your fuel system is dirty, it will clean it very quickly. I did this on a non-fuel injected car and was constantly cleaning the fuel filter. If there is any thing different about the way it runs, it has a slightly rougher idle some of the time. During the winter I think E-10 is great. There's no need to buy Heet or other water absorbing additives. Heet is an alcohol blend of some sort. Also don't think the ethanol can separate from the gasoline. I have no complaints with E-10. Also have a '96 Windstar I bought new and have used E-10 since day one. The Windstar has 120,000 miles and my T-bird over 165,000 miles. hope this helps you in some way. I think it is a good fuel. As far as increased libido and other miracle cures, your results may vary.
 

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Did you start like 5 threads? I thought I replied to one of them.

For as long as I can remember, we have had 10% E for a portion of the year here in Tucson.

I had a couple of carb'ed cars that didn't like it at all, one that the first two tanks it sputtered and wouldn't run.

My 98 Cougar used to not like the first tank, but that was 6 or 7 years ago, now it is fine.

My fathers Expedition (00 5.4) does run really poorly on it, and he tends to have issues frequently and requires a bottle of heet to get it going again. When he goes to the higher altitudes and gets it it is worse.
 

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Discussion Starter #4
Thanks for the replies. Yeah, I did start several threads...didn't know which forum was right. Sounds like nothing in the fuel system is likely to melt or corrode. It also sounds like mixing regular gas and E10 are not a problem. I store two of my birds for five months of the year. I wonder if I should drain the tanks before. Any experience with that?
 

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Hurts mileage a little, and as for storing a car with it, ethanol is hygroscopic, and that seems to be the root of all the issues my dad sees with it, and why tossing a bottle of heet in fixes it. I think with the way it absorbs water you want to have as little if any of it, I don't know it the stuff you put in ot keep gas okay for long periods of time helps with it or not.
 

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I been using E85 in my 95 Escort for two tanks now... notice nothing negative 'cept for the exaust smells a little different now... I havent done an MPG check yet, i expect it to suffer a lil, but i'll find out for sure in a couple weeks when i'm able to fill it up twice in a row...

PS. i know you guys were talking about E10, but i just wanted to throw in the extreme side of it :)
I've been using E10 in both my escort and cougar for over a year, with no i'll effects, the cougar is carbed and still seems to like E10...
 
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