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  #1  
Old 02-24-2012, 09:16 PM
seltzer seltzer is offline
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Does anyone actually run it? I've heard good, but mostly poor things about it. This is my first Flex-Fuel vehicle, so I'm a little green about it.

I've heard that it runs poor, is sluggish, and generally get less MPG's running E-85 vs. a 10-15% blend.

On the positive side, it is cheaper, but if the performance isn't there, then I would not think it would be worth it.

Any real life users want to chime in?
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Old 02-28-2012, 10:38 PM
Ruiz24 Ruiz24 is offline
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Yes it is cheap but u only get 12 mpg I tried it I like the price /gal but did not like the mpg
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Old 02-29-2012, 08:04 AM
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Thanks! I found some threads here about it under "flex fuel". Looks like it is not cost effective in the least. AAA actually has a mpg/dollar conversion on their website, and it was about .25 higher!

I'm all for cleaner burning, but if the gub'ment wants us to take it seriously too they need to make it cheaper!
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Old 02-29-2012, 11:29 AM
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I use it I dont know what they are talking about, low power my ass. It gave my truck a swift kick in the nads. That thing is significantly faster on 85% ethanol (its like 150 octane LOL).

Where it does suck, is in MPG. But, I drive 90% city anyway, 2mpg doesnt hurt me much. I would never use it on the highway, but I drive around town using it all the time. Its still under $2.90 a gal on post.
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Old 02-29-2012, 12:30 PM
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I think I'm going to try a few tanks of it. The closest station is about 10 miles away, I too do mostly city driving.

You've convinced me Army...going to give it a shot! Thanks
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Old 02-29-2012, 12:40 PM
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Ethanol does have less energy per same unit volume compared to pure gas. So you do get less power and less mpg. It is higher octane but that doesn't give you more power unless the engine is designed for it (much higher compression and timing advance over what they are designed at).

Ethanol also can eat rubber parts, o rings, etc. I'm sure the E85 compliant vehicles have some sort of different material that somewhat prohibits this from happening, but I still wouldn't use it personally.
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Old 02-29-2012, 01:18 PM
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Quote:
Originally Posted by snrusnak View Post
Ethanol does have less energy per same unit volume compared to pure gas. So you do get less power and less mpg. It is higher octane but that doesn't give you more power unless the engine is designed for it (much higher compression and timing advance over what they are designed at).

Ethanol also can eat rubber parts, o rings, etc. I'm sure the E85 compliant vehicles have some sort of different material that somewhat prohibits this from happening, but I still wouldn't use it personally.
All of the O-rings, gaskets, rubber lines and seals in the fuel system of the 4.7L are made with teflon, to include the Injector O-rings. It doesn't somewhat prohibit it, It completely eliminates it
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Old 02-29-2012, 01:29 PM
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^that's what I figured, but after seeing what a 10% blend does to my lawnmower, weed eater, pressure washer, etc... it's still hard to think about putting it in my truck haha.
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Old 02-29-2012, 04:36 PM
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I know there's very little reliability from "I know a guy" situations, but here in NE, I work with farmers every day. One farmer I work with only runs E85 in his newer Chevy FlexFuel. He said the first few tanks sucked, but after that he doesn't notice any difference at all. This is traveling mostly gravel roads, but he's got a few kids, so he travels to games a lot in it etc. I trust him completely, he's always doing tests on things, very smart guy. I've been wanting to convert my 05 to E85, but I just can't swing the $500 to do it ya know... I'd say don't even compare your gas mileage until the 4th tank, that way the computer can re-learn it and make it's own changes...
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Old 02-29-2012, 04:37 PM
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I generally don't run anything less than 93 in my small engines. My Honda Foreman 500 runs like crap on 87! I've heard they make a recreational 93 octane fuel with zero ethanol, but I've yet to see it around my parts.

I also read that e85 doesn't have a long life...meaning it can't sit around for weeks and months.
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