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  1. #1
    DooX's Avatar
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    Low octane fuel on the water

    Here in my area of Ontario the marinas only sell 87 or maybe 89 octane fuel. What do you guys with mods and tunes do when 87 is the only fuel available?


  2. #2

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    Keep octane boost in my ski

  3. #3
    ptscon's Avatar
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    When I know I'll have to fill up on the water I'll fill the ski with the highest octane I can find, which is 93 around here, before heading out. This way it will be a little better when mixed with the lower grade marina gas and try resisting wot

    For short outings I use 91 and that's what my ski is tuned for.

  4. #4
    DooX's Avatar
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    Quote Originally Posted by joseph9936 View Post
    Keep octane boost in my ski
    What brand do you use?

  5. #5
    ptscon's Avatar
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    Octane boosters don't work, or at least not as they are advertised.

    It's been shown you'd need ridiculous amounts of that stuff to raise octane by anything worthwhile.

  6. #6
    DooX's Avatar
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    Quote Originally Posted by ptscon View Post
    Octane boosters don't work, or at least not as they are advertised.

    It's been shown you'd need ridiculous amounts of that stuff to raise octane by anything worthwhile.
    He's not talking about the junk at Canadian tire.
    There are a few companies that sell products that raise 87 octane fuel to over 100 octane.

    http://www.gpkracing.com/Shellbourne-Fuels.html

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  8. #7
    ptscon's Avatar
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    Quote Originally Posted by DooX View Post
    Quote Originally Posted by ptscon View Post
    Octane boosters don't work, or at least not as they are advertised.

    It's been shown you'd need ridiculous amounts of that stuff to raise octane by anything worthwhile.
    He's not talking about the junk at Canadian tire.
    There are a few companies that sell products that raise 87 octane fuel to over 100 octane.

    http://www.gpkracing.com/Shellbourne-Fuels.html
    Someone on grewnhulk did actual lab tests of a "good octane booster" and their claims were not even close.

    You should be able to find it, up to you.

  9. #8
    11c's Avatar
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    I always bring extra fuel cans if I'm going to be leaving them in the water for a weekend when staying at a cabin or whatever...then drive to a gas station to re-fill the cans.
    I guess filling with 87 to get me home would be OK but I'm sure with the tune my timing would be pulled way back if the knock sensor is active, I'd just take it easy in eco mode. I wouldn't run tank after tank of 87-89.

    Re; Octane boost...Lucas Oil has one that they assured me (through email) will raise 87 to 90 or 89 to 92 so THREE WHOLE octane numbers, not octane points like STP, Wynns, NOS and all that other stuff, 2-3 whole numbers was all I was after.
    I contacted Lucas when I was drag racing SKI-DOO's because I wanted a real back up solution when I rode the stockers out on the trail with the timing cranked up and raised compression. No issues with the Lucas when I did need it. I also used it in my old 2001 951 DI that required 91, no issues there either.
    Canadian Tire here sells it in a Red bottle, along with 6-7 others that I don't even look at.
    With my ECU tune I'd feel safer keeping a can of 110 or higher race fuel within reach to ad to the 87 fill ups if that's all that was around on a weekend getaway.
    Last edited by 11c; 10-13-2016 at 02:35 AM.

  10. #9

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    Octane boost is better option when your riding all day and come up on needing gas in the middle of your day. You can choose not to put it in and just keep the rpms low to stay out of the supercharger.

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