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  1. #1
    Join Date
    Jan 2004
    Location
    Northern/Southern ky
    Posts
    3,959

    mercruiser trim pump oil ?

    do i use merc trim oil for the mercruiser style pump?????
    i had the oildyne before... is it nessesary pump all the old oil out of the ram??
    thanks,
    roy
    93 xr 2001 drag with a 15" drag
    92 xb 2002 comp with a 15" drag
    R.I.P. Phil "rpm racing" Watch over the rest of us my friend.

  2. #2
    I've been using tranny fluid in both of mine. It speeds them up a bit.

    Ló fasz racing
    Joe Horvath



  3. #3
    I use trannay fluid in 2 and a lighter hyd oil in one....the hydrolik oil one iz a tad quicker on 24 volts, but about the same on 12v.....JMO

  4. #4
    Join Date
    Jan 2004
    Location
    Northern/Southern ky
    Posts
    3,959
    should i bleed the entire system

    roy
    93 xr 2001 drag with a 15" drag
    92 xb 2002 comp with a 15" drag
    R.I.P. Phil "rpm racing" Watch over the rest of us my friend.

  5. #5
    Just get most of it out. It'll be ok.

    Ló fasz racing
    Joe Horvath



  6. #6
    Join Date
    Jan 2004
    Location
    Northern/Southern ky
    Posts
    3,959
    cool thanks,
    roy
    93 xr 2001 drag with a 15" drag
    92 xb 2002 comp with a 15" drag
    R.I.P. Phil "rpm racing" Watch over the rest of us my friend.

  7. #7
    Transmission fluid, power steering fluid...I even know some folks who use 30W motor oil (which seems a little heavy to me, but it works).

    Just stay away from anything that has detergents in it...it tends to make a lot of air bubbles.

    I just replaced my old Oildyne trim pump with a Mercruiser model. Got all of the old fluid out of the ram cylinder that I could, without going through any extra trouble, then filled the new reservoir with power steering fluid, worked out all the air, refilled the reservoir, and went boating. Works flawlessly.

  8. #8
    Join Date
    Apr 2001
    Location
    Brooklin, Ont. Canada
    Posts
    2,358

    Oil

    Quote Originally Posted by jphii View Post
    I've been using tranny fluid in both of mine. It speeds them up a bit.
    I have always used Amsoil Tranny fluid aswell. Seems to be quicker .......

    As flo - Joe said

  9. #9
    Quote Originally Posted by h2oskiier30 View Post
    Transmission fluid, power steering fluid...I even know some folks who use 30W motor oil (which seems a little heavy to me, but it works).

    Just stay away from anything that has detergents in it...it tends to make a lot of air bubbles.
    Yes, that's the way it is.
    Markus' Performance Boating Links:
    www.toastedmarshmallow.com/performance

  10. #10
    Join Date
    Aug 2001
    Location
    St. Cloud, FL
    Posts
    3,784
    I've used Marvel mystery oil in the past, but recently have been using tranny fluid. If that mercruiser pump is not new, pull the resevoir off of it, and make sure the "socks" on the end of the pickups are clean before putting new oil in it. They can clog up and cause you a headache if the get some crap in em'.
    1995 Allison Grand Sport
    1998 Mercury Stock 2.5-260 SS

    1990 Velocity 30' - 502's

    Go Daddy Go! Racing

  11. #11
    Join Date
    Jan 2004
    Location
    Northern/Southern ky
    Posts
    3,959
    thanks guys

    roy
    93 xr 2001 drag with a 15" drag
    92 xb 2002 comp with a 15" drag
    R.I.P. Phil "rpm racing" Watch over the rest of us my friend.

  12. #12
    Roy, be careful with that new mercruiser pump...Up is fast, but down is even faster!!! It can get harry at first until you get use to it...

  13. #13
    Join Date
    Aug 2007
    Location
    Ft. Lauderdale, Fl
    Posts
    7,381
    The service manuals call for either the Merc trim fluid or 20W oil.
    "One of the penalties for refusing to participate in politics is that you end up being governed by your inferiors". Plato .

  14. #14
    Roy, be careful with that new mercruiser pump...Up is fast, but down is even faster!!!
    It ain't dat........

    Mercury juss ain't figger'd out how to make it allisoon frenly yet!!!!.....Give Darris time, I bet he will have a pump specially fer one ov them hook'r botes.....

    Maybe U could hook tha down side on 2 "D' SIZE BATTERIES

    Sorry....tha devil made me do it

  15. #15
    I just installed a fast pump in my ally and have had a couple of suprises coming down from speed. She's tried to come around to the right a few times now. You have to be real careful with the down trim.
    Btw, chalk one more up for Marvel Mystery Oil.....

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