View Poll Results: Ethanol "Premium" or 100% Gasoline "Premium"

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  • 93 Octane with Ethanol

    4 80.00%
  • 91 Octane "Pure Gas" no ethanol

    1 20.00%
Results 1 to 6 of 6

Thread: Is ethanol really that bad for an SC?

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  1. #1
    Join Date
    Jun 2015
    Location
    South Carolina
    Posts
    22

    Is ethanol really that bad for an SC?

    I have religiously purchased "real" gas for my SC, fearing that ethanol would cause problems, leaks and painful bills. It was sort of a pay now or pay later decision. In retrospect, my SC has been very reliable over its 25 years, so I haven't had to "pay later." But - was that really necessary? If I switch to ethanol containing premium fuel now (almost $1/gallon cheaper than my current brew), will it really matter? Let's hear what the experts think.

    I'm trying to post a poll, but the options don't seem correct.

  2. #2
    Join Date
    Jan 2003
    Location
    Woodbridge, VA
    Posts
    5,068
    I'd save the bucks and go with the 93. Now if the cars sits for extended periods of time without going thru a tank of gas then use the non ethanol fuel.
    ~Chris
    SCCoA Member #1826
    Bettie Riding jack stands
    SCARlet on drag duty now

  3. #3
    Join Date
    Feb 2003
    Location
    Tinton Falls, NJ
    Posts
    1,488
    It isn't going to cause any problems in terms of creating leaks by itself. As was mentioned, if you leave the car sit for long periods of time, it can cause problems because ethanol absorbs moisture out of the air, and that moisture, if left in the tank for long periods, can cause components to rust. If you regularly drive the car, then the fuel is used up before it has a chance to absorb much moisture, so it is a non-issue. Really the only downside you will notice is a significant drop in gas mileage, probably to the tune of 2-3mpg. At 25 cents a gallon, that would probably be a wash, but if the E10 is $1/gal cheaper, then I would just run that and not worry about it. Only thing is if you are going to store the car at any time, run the tank almost empty and fill it to the brim with the straight gas before you do.

  4. #4
    Join Date
    May 2015
    Posts
    68
    Ethanol is used to increase octane. What is used in the non ethanol blend? I had an idea that really don't know if its worth it or not, but I've thought of using non ethanol blend 93 oct and add 10% ethanol to it to raise octane. Don't know if it's worth it or not. Having a hard time finding home brew mixing chart for it.

  5. #5
    Join Date
    Nov 2012
    Location
    wisconsin
    Posts
    714
    my cars ALWAYS ran better with 93 ethanol as compared to 91 w/o..smoother engine and better mileage..yes,i constantly kept track of mileage while taking long road trips..i even found 93 eth plus 2 bottles of dollar store oct booster and it would get an extra 20-30 miles to the tank.no bs either it was a constant plus every time i used them. sometimes though hard driving effected it of course but when id travel id grannygrain the entire time from point a to b.

  6. #6
    Join Date
    Sep 2014
    Location
    Broken Arrow, Ok
    Posts
    188
    Quote Originally Posted by 20psiofevil View Post
    Ethanol is used to increase octane. What is used in the non ethanol blend? I had an idea that really don't know if its worth it or not, but I've thought of using non ethanol blend 93 oct and add 10% ethanol to it to raise octane. Don't know if it's worth it or not. Having a hard time finding home brew mixing chart for it.
    I run an E30 mix in my 13 EcoBoost F150. With 91 octane that gives me about 95 octane total. I'll find the chart I use.

    BTW, Ethanol not only gives you a higher octane but it has a cooling effect to.

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