oil & gas mix

Discussion in 'Outboards' started by mel jordan, Oct 22, 2007.

  1. mel jordan
    Joined: Sep 2007
    Posts: 1
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: canada

    mel jordan New Member

    Hello I just bought a 1989 mercury 15 HP outboard & I would like to know the proper oil type & mix ratio.

    Thanks
     
    mel jordan, Oct 22, 2007
    #1
  2. cbsr
    Joined: Oct 2007
    Posts: 2
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Bracebridge, Ontario

    cbsr Sunk My Boat

    Mercury Recommends 50:1 Ratio After break in. It never hurts to mix it a bit richer. Recommend to use TCW-3 Type Outboard Oil.
     
    Last edited: Oct 22, 2007
    cbsr, Oct 22, 2007
    #2
  3. Frosty

    Frosty Previous Member

    Most engines today run 100:1 if your 50:1 then run 50:1 mixing richer will do nothing but oil plugs. If it was better to run richer Mercury would say so.

    Yamaha perfected 100:1 oil ratio in 1984.
     
    Frosty, Oct 23, 2007
    #3

  5. dd24skater
    Joined: Oct 2007
    Posts: 17
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Ohio

    dd24skater Junior Member


    My High Perf Merc ran at 32:1
    50:1 will be fine for that 15 hp

    Dd
     
    dd24skater, Oct 29, 2007
    #4
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