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  1. #1
    Member
    Join Date
    Apr 2011
    Location
    Thunder Bay
    Posts
    17

    What would you do?

    Ended up with about a tablespoon of lower unit oil in my engine oil resevoir for my 2011 125 opti. Let's just say this:don't use empty oil jugs to dispose of your old lower unit oil and leave them lying around.... So should I siphon all the oil out? Or would it be sufficiently diluted it shouldn't cause a problem. There is about 1 tablespoon of lower unit oil in a gallon of Opti oil. I am thinking of draining it in the spring.
    Another lesson learned!!!

  2. Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
    Join Date
    Apr 2008
    Location
    Greenville, SC (US)
    Posts
    97,935
    #2
    The book answer is that the tank should be completely drained, cleaned, refilled with appropriate Optimax/DFI oil (and the the oil pump primed).

    In reality, one tablespoon in 1.5+ gallons is a relatively small amount, but honestly... you're better safe than sorry.


    Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
    Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
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  3. Member
    Join Date
    Apr 2012
    Location
    Bolivar< MO
    Posts
    143
    #3
    Run it!!