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  1. #1
    Member
    Join Date
    May 2011
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    rochester
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    19

    non ethonal fuel

    i recently found 2 gas stations that have started selling non ethonal fuel. they only offer 91 octane. my 250 pro xs says to run 87-89. can i run 91 to avoid the ethonal

  2. Member esdbass's Avatar
    Join Date
    Sep 2006
    Location
    Chestnut Hill, Ma
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    4,872
    #2

    Re: non ethonal fuel (homer8228)

    I'm pretty sure Don would recommend not using the 91 becuase of the long term potential to build up carbon deposits on top of the piston. Your motor does not need the 91 octane. A better course of action would be to make sure all your lines and primer bulb are ethanol complaint, that your VST and pulse pump are clear of debris and that you run Don's "Cocktail" in each and every drop of gas you put in your tank

  3. Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
    Join Date
    Apr 2008
    Location
    Greenville, SC (US)
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    98,291
    #3

    Re: non ethonal fuel (esdbass)

    +1... that's pretty much what I'd say.

    You might also want to look through the following TWO posts:

    http://www.bbcboards.net/zerothread?id=310172

    http://www.bbcboards.net/zerot...first




    Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
    Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
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