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Question about using ETHANOL Fuel

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Old Jun 16, 2008 | 08:36 PM
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Default Question about using ETHANOL Fuel

Hello, I've read in the manual that I should not use METHANOL in my
C6. Drove to Idaho over the weekend and went to several gas stations and they all had "Contains 10 Percent Ethanol". Drove back into Washington approx 30 miles to get gas that did not have any Ethanol in it. I called the Dealership today and was told that "not so sure but will get you the info tomorrow" . Does any of you know if it is ok to use any Ethanol and is there some kind of additive to use.

Thanks
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Old Jun 16, 2008 | 08:47 PM
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Originally Posted by 38 Years Later
Hello, I've read in the manual that I should not use METHANOL in my
C6. Drove to Idaho over the weekend and went to several gas stations and they all had "Contains 10 Percent Ethanol". Drove back into Washington approx 30 miles to get gas that did not have any Ethanol in it. I called the Dealership today and was told that "not so sure but will get you the info tomorrow" . Does any of you know if it is ok to use any Ethanol and is there some kind of additive to use.

Thanks
It's o.k. to use 10% ethanol and you don't need any additives. People with older boats who fill up at land gas stations should be sure their boat fuel systems are o.k. to use with ethanol as it can affect fuel lines.
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Old Jun 16, 2008 | 09:44 PM
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If you closely monitor your engine closely and it is tuned optimally, 10% ethanol will throw off your fuel trims by, coincidentally, +10%. Other than some more water production and power, you probably won't notice the difference. If I you have a choice, I avoid it.
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Old Jun 17, 2008 | 12:17 AM
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Originally Posted by kelp
If you closely monitor your engine closely and it is tuned optimally, 10% ethanol will throw off your fuel trims by, coincidentally, +10%. Other than some more water production and power, you probably won't notice the difference. If I you have a choice, I avoid it.
However, it is getting difficult to find fuel in my area that does not state, "Contains up to 10% ethanol."
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Old Jun 17, 2008 | 07:07 AM
  #5  
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Originally Posted by slvr76
However, it is getting difficult to find fuel in my area that does not state, "Contains up to 10% ethanol."
All of our fuel here in CO (or at least all that I've come across) is 10% ethanol. 40K on my 2006 and no issues.
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Old Jun 17, 2008 | 08:24 AM
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Almost all if not all fuel in the US has 10% etoh now.

Stations are not required to post the etoh content if it is 10% or less.
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Old Jun 18, 2008 | 12:03 AM
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Thank you all. I got the answer back from the Dealership and was told it is ok. My concern is if something happens to the engine and it is fuel related will GM coved it or will I get screwed
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Old Jun 18, 2008 | 05:33 PM
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ALL fuel in NJ has up to 10% ethanol in it. I am not aware of any problesm with it.
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Old Jun 19, 2008 | 10:17 AM
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all gas in houston is 10% ethanol and I consistantly get between 34 and 37 mpg on the freeway...I'd say ethanol doesnt hurt it too bad
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Old Jun 19, 2008 | 10:22 AM
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Originally Posted by AU N EGL
Almost all if not all fuel in the US has 10% etoh now.

Stations are not required to post the etoh content if it is 10% or less.
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