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  1. #1
    Member
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    New 200 pro xs fuel?

    Have my new boat on order it is comming with a 200 pro xs. Would it be a good idea to run ethanol-free fuel in it or should I just run regular 87 octane? Thanks!
    "We all have it commin kid....." Will Munny

  2. Member
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    Mar 2017
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    #2
    I've had my Mercury 200 Pro XS for a couple of seasons and it works much better with 87 octane. I run Super ethanol-free the last couple of weeks of the season, before putting the boat away, and notice the difference.

  3. Scraps
    Join Date
    Apr 2007
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    Havertown, PA
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    #3
    Man if you're in an area where it's available absolutely. No need for anything but 87.
    2017 Phoenix 819
    2016 200ProXS, s/n 2B359849, Mod 1200P73BD

  4. Member
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    Dec 2019
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    Katy, TX
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    #4
    Quote Originally Posted by krindgen View Post
    Man if you're in an area where it's available absolutely. No need for anything but 87.
    Agree, but I can’t find anything other than 91 non ethanol in Katy, TX area.

    Read Dons post on fuels, non ethanol is like #3 or 4 or his importance
    http://www.bbcboards.net/showthread.php?t=591938

  5. Scraps
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    #5
    Quote Originally Posted by RGK456 View Post
    Agree, but I can’t find anything other than 91 non ethanol in Katy, TX area.

    Read Dons post on fuels, non ethanol is like #3 or 4 or his importance
    http://www.bbcboards.net/showthread.php?t=591938
    I'm just saying it's great if you've got the option but most do not. Running higher octane will produce more carbon. I have to check next time at the pump, most stations around here are 15% ethanol I think.
    2017 Phoenix 819
    2016 200ProXS, s/n 2B359849, Mod 1200P73BD

  6. Member
    Join Date
    May 2011
    Location
    Spangle, WA
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    #6
    From the 4-stroke FAQ Fuel topic at top of forum (same as for 2-strokes):

    Fuel Selection:

    Make your fuel selections based on the following criteria, IN THE FOLLOWING ORDER:

    -High Traffic, Top-Tier (Name Brand) Fuel
    -Appropriate Octane Rating (see above info)
    -Lowest possible ethanol content (NEVER to exceed 10%).
    -While it may be preferable to utilize a fuel that contains lower (or no) ethanol, use of fuels that are SUBSTANTIALLY higher octane can result in decreased performance, decreased fuel economy, and potential for carbon buildup. Higher octane fuels burn SLOWER and COOLER.
    _______

    Phil
    '09 Hewescraft ProV
    '09 150 Optimax


  7. Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
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    Apr 2008
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    Greenville, SC (US)
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    #7
    ^^^^^ There you go... see above clip on "Fuel Selection" from the FAQ Section.


    Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
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