What is the correct fluid to use?

Discussion in 'Sport Cruisers' started by 340DA, Jun 13, 2018.

  1. 340DA

    340DA Member

    195
    Jul 21, 2008
    LI Sound
    2000 Sundancer Sport Cruiser
    454 Mercruiser w/Bravo III Drives
    I need to know what is the correct fluid to use to top off the fluid levels in the reservoirs for the for the 2 following items:
    1. Trim Tab pumps - to move them up and down
    2. Outdrives - to move them up and down

    Do I use Gear Lube fluid? Or are there separate types of fluids to be used for each item?

    Thanks
     
  2. M Prod

    M Prod Active Member SILVER Sponsor GOLD Sponsor

    388
    Oct 6, 2017
    North Vancouver, BC
    2005 Sundancer 340
    Aquapro Dinghy w/ Honda 8hp
    Kohler 5KW Genny
    Raymarine Electronics
    8.1 Horizons /V Drives
    automatic transmission fluid for both works fine.
     
  3. techmitch

    techmitch Active Member SILVER Sponsor

    May 1, 2008
    Chesapeake Bay, Middle River/Frog Mortar Creek MD.
    1999 270 DA
    Twin 4.3s W/Alpa I Gen II's
    Um, don't think those expensive B3 drives would fair so well with ATF in them.

    Mercury/Quicksliver High performance gear oil only is my bet.
     
  4. cdog

    cdog Member

    41
    Aug 28, 2013
    Lake Michigan, racine
    2005 353 fastech, 94 440 Express Bridge, zodiac yl340
    496HO's, cummins 6BTA's, Yamaha F40
    Stay with quicksilver/merc brand fluids. To move tabs up and down and drives up and down require the same fluid in the hydraulic reservoirs. Do not use gear lube for this application! “Mercury power trim and steering fluid”

    There is a seperate reservoir for the outdrive gear lube which should be “merc high performance gear lube”. Do not confuse these reservoirs.
     
  5. M Prod

    M Prod Active Member SILVER Sponsor GOLD Sponsor

    388
    Oct 6, 2017
    North Vancouver, BC
    2005 Sundancer 340
    Aquapro Dinghy w/ Honda 8hp
    Kohler 5KW Genny
    Raymarine Electronics
    8.1 Horizons /V Drives

    Pretty sure he’s talking about the trim system for the out drive. Probably don’t want to put gear oil in that.
     
  6. techmitch

    techmitch Active Member SILVER Sponsor

    May 1, 2008
    Chesapeake Bay, Middle River/Frog Mortar Creek MD.
    1999 270 DA
    Twin 4.3s W/Alpa I Gen II's
    You are correct, sorry.
     
    M Prod likes this.
  7. LG111

    LG111 Active Member

    364
    Jan 4, 2015
    NW
    410
    8.1
    anything hydrolic related use ATF.
     
  8. bbwhitejr

    bbwhitejr Well-Known Member SILVER Sponsor

    Apr 14, 2013
    Lake Lanier GA
    2007 44DB
    Cummins QSC 8.3s
    +1
     
    M Prod likes this.

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