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Thread: can I run ethanol gas in my 4 stroke 2.5 hp motor

  1. #1
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    Default can I run ethanol gas in my 4 stroke 2.5 hp motor

    10% ethanol I've read is okay, but some stations near me sell a higher % ethanol. It damaged my 90 hp motor and I don't want the same to happen to my new kicker.

  2. #2
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    I would believe the seals and hoses would bot be rated for the higher ethanol content. What ar e the manufacturers recommendations?
    :I would like to thank the builders of docks for giving me a place to fish and lose tackle

  3. #3
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    For what it’s worth I run recreational fuel in my outboard (2018 Mercury 60hp) and all my mowers and power equipment. It’s more expensive but I believe it’s worth the extra cost.

    Here is is an article on outboards and one from Husqvarna about outdoor power equipment.


    Fishermen beware: ethanol fuel is deadly for outboard motors - AllOutdoor.com

    What is ethanol fuel and why is it bad for your small engine outdoor power equipment? | Husqvarna US
    John

    ď Go make an impact for Godís Kingdom today and everyday. ď

  4. #4
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    This site lists stations that sell 0 ethanol fuels by state.

    Ethanol-free gas stations in the U.S. and Canada
    John

    ď Go make an impact for Godís Kingdom today and everyday. ď

  5. #5
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    I run 100% gas in the outboard, lawnmowers, any 2 stroke outdoor equipment gets true fuel. Only use a couple of gallons a year.
    :I would like to thank the builders of docks for giving me a place to fish and lose tackle
    Likes BuckeyeCrappie, LadyBear LIKED above post

  6. #6
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    Thanks for the replies. Guess the least I can do is use Stabil. I'd hate to empty the fuel tank ever few weeks.
    Likes LadyBear LIKED above post
    Thanks BuckeyeCrappie thanked you for this post

  7. #7
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    But way to empty is to go fishing.
    John

    ď Go make an impact for Godís Kingdom today and everyday. ď

  8. #8
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    Update:
    I called Mercury outboard and this is what I was told:
    1. make sure 10% ethanol is max. Higher than that (E15)- no good. Mobil and Exxon always mix no more than 10% ethanol (E10).
    2. use Stabil gas treatment to help with water/ gas separation due to ethanol
    3. as long as Stabil or some other gas treatment is used, using stored gas shouldn't be a problem - even through the winter
    4. a higher octane than regular (81) is not always good or advantageous

    Again, thanks for the replies. (Now if I can only follow the 10 steps to get the thing started! )
    Last edited by Spoonminnow; 06-14-2021 at 09:26 AM.
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  9. #9
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    Stabil makes some good products
    :I would like to thank the builders of docks for giving me a place to fish and lose tackle

  10. #10
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    They ship in what ever they have so making sure what you are burning is sketchy at best . Had a mercury carb. gassket go bad and was told it was ethanol . When I said it had never had ethanol in it the mechanic laughed .

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