Welcome Guest - Sign Up today
Welcome Guest - Sign Up today



Help Tip: If you have a question that has not been answered to your satisfaction in the archives, it is always best to start a new thread of your own. By starting your own thread, you will receive the maximum number of views by forum members.

Please note this topic has been inactive for 90 days. For the best results, please start a new topic.

Thank you all in advance for doing your part in helping iboats run a smooth ship.

Additional forum rules linked below.
See more
See less

Tilt Trim oil for mercruiser 140

  • Filter
  • Time
  • Show
Clear All
new posts

  • Tilt Trim oil for mercruiser 140

    My boat is a sun ray(80s) tri hull with a mercruiser 4 banger engine and alfa 1 outdrive(i think) says 140 on it!! The tilt trim is the power trim double hose. My book says it takes 5w-30 oil. Can I use 5w-30 synthetic? or even 15w-40?
    ps keyboard broke

  • #2
    Re: Tilt Trim oil for mercruiser 140

    You can actually use just about any petroleum based oil.

    I use auto trans fluid because it's red and leaks are easier to identify.


    1987 FourWinns 211 Liberator, Originally an OMC 460 King Cobra.
    Re-powered in 2006 with a 1997 Mercruiser 7.4L Bravo III


    • #3
      Sign up today
      Re: Tilt Trim oil for mercruiser 140

      You need to see what color fluid is in the trim system already. If it's red then you can use Dextron ATF. If its clearish/tanish then its tilt/trim fluid.
      just because you found it that way does not mean it is supposed to be that way.