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Lower Unit Oil Black?

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  • Lower Unit Oil Black?

    What could cause my lower unit oil to turn black? I was thinking exhaust leaking into gearcase.
    93 Gambler Intimidator
    90 Mercury 150XR4

  • #2
    Re: Lower Unit Oil Black?

    I have the same thing but i was assuming that it was from all the years of oil sitting in the housing if you find anything let me know

    I wish WOMEN were more like my BOAT i can get it wet when i want to!!!!!


    • #3
      Re: Lower Unit Oil Black?

      Not replacing it frequently can certainly do it.
      The wetter, the better.


      • #4
        Re: Lower Unit Oil Black?

        Thats what mine looked like before the gearbox s#it it self. If only i had changed it.. dow!!


        • #5
          Sign up today
          Re: Lower Unit Oil Black?

          Better black than yellow....but blue is best.

          If you are new to boating or have a new boat, a knowledgeable friend could show you how to operate your boat and save you a lot of grief, maybe some money, and maybe your life.