Interesting article: E85 vs. Gasoline
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2009-2014 Cadillac CTS-V General Discussion Discussion, Interesting article: E85 vs. Gasoline in Cadillac CTS-V Series Forum - 2009-2014; Edmunds did a real world test to the best of their ability. The results are pretty interesting. Brian http://www.edmunds.com/fuel-economy/...762696&msite=w...
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    Brian in GA's Avatar
    Brian in GA is offline Cadillac Owners Fanatic
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    Interesting article: E85 vs. Gasoline

    Edmunds did a real world test to the best of their ability. The results are pretty interesting.

    Brian


    http://www.edmunds.com/fuel-economy/...762696&msite=w

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    neuronbob's Avatar
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    Re: Interesting article: E85 vs. Gasoline

    It's already common knowledge that E85 sucks. That old test is just one more marker.

    I wish they'd take all the ethanol out of our gas, it increases cost and reduces fuel efficiency. It is time for the ethanol failure to end.

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    93hrdtoptt is offline Cadillac Owners Member
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    Re: Interesting article: E85 vs. Gasoline

    e85 is great if you would normally run race gas that costs $6 plus a gallon. I would figure that if you made an engine specifically for E-85 or higher then you would really benefit. IE high compression. You would use less fuel to get the power then. the anti knock characteristics of the ethanol would allow you to run it much leaner and still be safe. A 14 or 15 to one compression small displacement turbocharged engine maybe?

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    ExpatMedic is offline Cadillac Owners Member
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    The V loves E-85

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    Re: Interesting article: E85 vs. Gasoline

    ^^^^
    With the right tune, you are correct. My objection is in everyday driving, for which the benefit for most people (who don't drive flex-fuel engines designed for it) is questionable.

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    ExpatMedic is offline Cadillac Owners Member
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    Re: Interesting article: E85 vs. Gasoline

    I agree.

    E-85 in my city is currently $3.19 and premium gas is $3.56...still not a large enough price difference to make it more economical, but still very well worth it for what I'm running and my future plans. The little extra cost for e-85 is well worth it in a boosted application, imo. I'll virtually never have to worry about knock ruining my engine. From my understanding, you have to REALLY screw up a tune to get E-85 to knock.

    I haven't had enough time behind the wheel on e-85 yet (ive been overseas), but instant mileage on the hwy was showing around 20 on my way home from the dyno. I assume city mileage and/or average mileage is probably considerably worse than gas.

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    jrl657 is offline Cadillac Owners Member
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    Re: Interesting article: E85 vs. Gasoline

    Did you upgrade your injectors to use e85? I only ask because the previous car i drove was a e85 tuned Subaru STI. In order to use the E85 i needed to upgrade the fuel pump and get larger injectors. The car was really a beast on e85 but fuel milage went to less than 10mpg. The built-in computer showed +20mpg but was lying because it was assuming the old injectors where still squirting the juice.

    What has to be done for the V to run E85?

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    ExpatMedic is offline Cadillac Owners Member
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    Re: Interesting article: E85 vs. Gasoline

    Yea, I went with the ID850's, but larger injectors are needed for an upper/lower pulley combo on regular pump gas too. Fuel pump is stock and seems to be working. When I get back, I'll be doing some more data logging to see where we are at on the stock pump. My main concern will be whether or not there is enough room to run e-85+nitrous.

  10. #9
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    thebigjimsho is offline Cadillac Owners 10000+ Posts
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    Quote Originally Posted by ExpatMedic View Post
    I agree.

    E-85 in my city is currently $3.19 and premium gas is $3.56...still not a large enough price difference to make it more economical, but still very well worth it for what I'm running and my future plans. The little extra cost for e-85 is well worth it in a boosted application, imo. I'll virtually never have to worry about knock ruining my engine. From my understanding, you have to REALLY screw up a tune to get E-85 to knock.

    I haven't had enough time behind the wheel on e-85 yet (ive been overseas), but instant mileage on the hwy was showing around 20 on my way home from the dyno. I assume city mileage and/or average mileage is probably considerably worse than gas.
    Just the political crapstorm behind ethanol is enough for me not to use it...


    -- We miss you, JD (Dirt_Cheap_Fleetwood)


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    Re: Interesting article: E85 vs. Gasoline

    If you really look into ethanol use as a fuel, and look into all the details, it's really bad.

    It's motivated, IMO, by big agriculture lobbying Congress.

    It's subsidized, reduces food on a global level, raises food prices across the board, is not fuel efficient (limits range, etc), but, nonetheless, it is knock resistant. I will be the first to give it that.

    Seriously, end the subsidy first and foremost, then see where the price stabilizes.

    I just sat through a few days of meetings, and one of which was about current and future oil and gas supplies. Things are really changing on the domestic marketplace, and this will make ethanol an even worse option.
    Our domestic/import ratio has increased markedly, and is projected to keep increasing.

    This is good for jobs, and if we keep pushing reduced fuel consumption, this will have positive long-term effects on the economy, environment (less shipping of oil, plus if we continue better fuel economy, plus using methane for power production rather than coal), and the political cluster**** in the Middle East (if we import less, then ME oil decreases in price, making Iranian oil even less attractive for the Russians and Chinese, further sinking their economy and increasing the likeliness of a revolution).

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