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Tilt Trim oil for mercruiser 140

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  • 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?
    Thanks
    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.


    Regards,


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

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    • #3
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      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.

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