LFX Engine and E85 - ModernCamaro.com - 5th Generation Camaro Enthusiasts
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post #1 of 8 Old 04-17-2014, 10:30 AM Thread Starter
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LFX Engine and E85

I have searched on here, and on the ever informative Google, and have yet to find a consistent answer.

I am trying to determine if E85 can be used with the LFX Motor in the Camaro's. My previous car, a Chrylser 200 3.6L that was flex fuel friendly, and E85 made that thing scream. I was hoping to do a few trial tanks of E85, if the LFX can use it. IIRC the manual only says that we have to use 87 octane or better. The E85 is somewhere around 100-105 octane, so it is fine there. But, I know there are other considerations like; fuel lines, injector flow rates and such that would make it so E85 will harm your car.

Any information, or links to official GM info would be greatly appreciated.

Last edited by sebian; 04-17-2014 at 02:11 PM.
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post #2 of 8 Old 04-17-2014, 03:06 PM
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in the 2012 owners manual page, 9-58.

Quote:
E85 (85% ethanol) and other fuels containing more than 15% ethanol must not be used in vehicles that were not designed for those fuels.

Notice:
This vehicle was not designed for fuel that contains methanol. Do not use fuel
containing methanol. It can corrode metal parts in the fuel system and also damage plastic and rubber parts. That damage would not be covered under the vehicle warranty.
http://www.chevrolet.com/content/dam...2k12camaro.pdf


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post #3 of 8 Old 04-18-2014, 07:58 AM Thread Starter
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Just called Chevy Cust Care, and they did a VIN search on it, and said that it is not FlexFuel capable. They also said that; if the vehicle were able to use E85, it would have the FlexFuel badge and/or info on the window sticker.

Kind of a bummer, as I wanted to see how it would respond to the higher octane of E85, but oh well.

Last edited by sebian; 04-18-2014 at 08:10 AM.
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post #4 of 8 Old 04-18-2014, 11:39 AM
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If you're willing to take the risk in voiding your warranty, I know there are several people that have gotten a tune to specifically run E85 and had some good success and results with it.


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post #5 of 8 Old 04-18-2014, 11:44 AM
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Methanol is some corrosive stuff. If your car isn't made for it, it'll trash it eventually.

Also, your MPG will plummet.

Alcohol's not for burnin'...it's for drinkin'.

James 1:25 Ordered from Faulkner Chevy #NKCF02 1100 5/8/9 2000, 3300 7/16/9 TPW 7/20,GOT MY (low) VIN! 4000 7/24/9 ,Picked up 8/7/9!!! Signed Litho #45. Car signed by FBodfather 2011. Service: Jennings Chevy in PA. We don't "drift", kiddies... we POWER SLIDE! MOTM/COTM Sept 2012 Pro Patria Vigilans.
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post #6 of 8 Old 04-18-2014, 12:46 PM Thread Starter
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I am pretty sure the engine would do just fine on it. However, the rest of the fuel system (sans injectors) would prematurely fail for sure. Ethanol is very hard on rubber and plastics, and pretty much eats them up. That is why I was asking before even attempting to use it. The GM rep was rather amusing. After I started asking about running E85, he was all like: "are you running E85?" I think he was trying to catch me doing something I was not supposed to.

My previous car was flexfuel, and I loved running it. There was definitely a HP gain running it, it was $0.50 cheaper per gallon, but I was also getting about 30% less MPG running it.

Last edited by sebian; 04-18-2014 at 12:49 PM.
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post #7 of 8 Old 04-19-2014, 10:19 AM
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Quote:
Originally Posted by patriotpa View Post
Methanol is some corrosive stuff. If your car isn't made for it, it'll trash it eventually.

Also, your MPG will plummet.

Alcohol's not for burnin'...it's for drinkin'.
YOu don't want to drink methanol, it will make you go blind...its wood alcohol. You can, however, drink ethanol which is grain alcohol.

The two are confused a lot and ethanol had gotten a back rap from methanol. Methanol is the one that is really hard on rubbers and plastics....ethanol, not so much plastic, but some rubbers don't like it but take an extended amount of time to degrade.


An easy why to tell If the vehicle is e85 compatible is to look at the fuel cap. If its yellow then up can put e85 in it, otherwise its not the components that will make it hard to drive, its the tune. If the ECM cannot pick up 30-40% on the injector duty cycle then it will run lean and stumble.
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post #8 of 8 Old 04-19-2014, 10:24 AM
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I know...but thanks for the warning. Others may not know.

James 1:25 Ordered from Faulkner Chevy #NKCF02 1100 5/8/9 2000, 3300 7/16/9 TPW 7/20,GOT MY (low) VIN! 4000 7/24/9 ,Picked up 8/7/9!!! Signed Litho #45. Car signed by FBodfather 2011. Service: Jennings Chevy in PA. We don't "drift", kiddies... we POWER SLIDE! MOTM/COTM Sept 2012 Pro Patria Vigilans.
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