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Thread: fuel type

  1. #1

    fuel type

    should I be running 87 or 93 octane fuel in my 96 slt 780


  2. #2
    RLACEMAN's Avatar
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    If it contains ethanol you cannot use 87 only 89 or higher.

  3. #3
    ripcuda's Avatar
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    I disagree. Many folks here "recommend" you use 89+ gas if it has ethanol in it. No one is saying you "cannot" use 87 octane that has ethanol.

    You surely can use 87 octane (even w/10% ethanol) and you'll be fine. I've been running it for YEARS in my stock 750s, 780, and 1200... with no problems.

    Cheers!
    Last edited by ripcuda; 05-27-2015 at 02:11 PM.

  4. #4
    I've been running 87 ethanol free. I refuse to run ethanol fuel in any of my small engines I didn't know if the ski required anything higher than 87

  5. #5
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    It's a 2-stroke. You can run peanut butter in there if you have the right jets. Ethanol doesn't hurt it.

  6. #6
    RLACEMAN's Avatar
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    Quote Originally Posted by ripcuda View Post
    I disagree. Many folks here "recommend" you use 89+ gas if it has ethanol in it. One one is saying you "cannot" use 87 octane that has ethanol.

    You surely can use 87 octane (even w/10% ethanol) and you'll be fine. I've been running it for YEARS in my stock 750s, 780, and 1200... with no problems.

    Cheers!
    I wouldn't do it, even the service manual states that you must use 89 or better if it contains ethanol. For the extra 25 cents a gallon its not worth the risk on an old engine. Also remember the Fuji engines were designed before the widespread use of crap gas.

  7. #7
    ripcuda's Avatar
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    87 ethanol free is just fine for a stock 780. Even 87 w/ ethanol would be fine, if it doesn't sit unused in your tank for long periods of time. If you had triple-pipes, higher compression heads, or other performance stuff (intakes, carbs, exhausts)... then you would want to use the appropriate higher octane fuel for your needs.

    Cheers!

  8. #8
    MSX 150 guy lives on Mr. GP1800's Avatar
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    I would use whatever grade of ethanol free gas you can get your hands on.

  9. #9

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    in our ski's all we run is 87 with ethanol for over 15 yrs 97 sl 1050 97 sl900 96 sl900 01 slx 1200 97 sltx just to name a few of them tat have had ethanol since day one without a single problem

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