Results 1 to 4 of 4
  1. 04-16-2010, 11:51 AM #1
    Wheeler Lake
    Wheeler Lake is offline
    Member
    Join Date
    Mar 2010
    Location
    decatur
    Posts
    146

    2004 Mercury XS... Which oactane??

    Should I run only high octane gas in this motor?? Thanks guys
    Reply With Quote Reply With Quote
  2. esdbass
    esdbass is offline
    Member esdbass's Avatar
    Join Date
    Sep 2006
    Location
    Chestnut Hill, Ma
    Posts
    4,872
    #2 04-16-2010, 12:32 PM

    Re: 2004 Mercury XS... Which oactane?? (Wheeler Lake)

    If it's a 250 XS it's 91 minimum !!!!!!!!!!!
    Reply With Quote Reply With Quote
  3. Wheeler Lake
    Wheeler Lake is offline
    Member
    Join Date
    Mar 2010
    Location
    decatur
    Posts
    146
    #3 04-16-2010, 05:08 PM

    Re: 2004 Mercury XS... Which oactane?? (esdbass)

    Yeah, its a 250....I have been running the high octane in it. Thanks
    Reply With Quote Reply With Quote
  4. EuropeanAM
    EuropeanAM is offline
    Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
    Join Date
    Apr 2008
    Location
    Greenville, SC (US)
    Posts
    98,315
    #4 04-17-2010, 01:50 AM

    Re: 2004 Mercury XS... Which oactane?? (Wheeler Lake)

    91 or higher octane ONLY for this engine.



    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).
    Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
    Reply With Quote Reply With Quote
« Previous Thread | Next Thread »

Similar Threads

  1. Question? 2004 Mercury EFI 3.0L
    By Cincinnatibassmaster in forum Mercury - 3 Liter & 3 Liter High Performance
    Replies: 1
    Last Post: 10-28-2011, 01:37 AM
  2. Hours on a 2004 Mercury XS
    By Wheeler Lake in forum Mercury - 3 Liter & 3 Liter High Performance
    Replies: 2
    Last Post: 03-17-2011, 11:41 AM
  3. 2004 Mercury Efi 200
    By southpaw11 in forum Mercury - 3 Liter & 3 Liter High Performance
    Replies: 2
    Last Post: 05-10-2010, 06:48 PM
  4. 2004 Mercury 250 EFI
    By Blue Steel in forum Mercury - 3 Liter & 3 Liter High Performance
    Replies: 6
    Last Post: 11-05-2009, 05:32 AM
  5. 1993 XTB21 w/ 2004 225 Mercury? Need Help
    By mky286 in forum Allison Boats
    Replies: 3
    Last Post: 11-19-2006, 01:08 PM