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  1. #1
    Member
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    Jul 2009
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    Merc 90HP 4 stroke gear lube capacity

    My owners manual says like 27 oz but it only took about 16 oz. Anyone else experience this?
    Thank you
    2015 EXCEL 1860 SIDE STALKER WITH HUNT DECK CAMO
    2015 Mercury 90 HP FOURSTROKE
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  2. Banned
    Join Date
    Oct 2017
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    Newman, CA
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    #2
    Yes. A drain and refill for me is usually 1/2 quart.

  3. Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
    Join Date
    Apr 2008
    Location
    Greenville, SC (US)
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    98,378
    #3
    Quote Originally Posted by Fishinglineman View Post
    My owners manual says like 27 oz but it only took about 16 oz. Anyone else experience this?
    Thank you
    If you would, please take a moment to review the Announcements at the top of the forum, and be sure to provide the Required Info (serial number) when posting. Thanks!

    Gearcase capacity will vary from one case to another, and is based on a totally dry (never filled) gearcase.


    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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  4. Member
    Join Date
    Jul 2009
    Location
    Lake Guntersville
    Posts
    659
    #4
    Thank you
    2015 EXCEL 1860 SIDE STALKER WITH HUNT DECK CAMO
    2015 Mercury 90 HP FOURSTROKE
    CMC MANUAL JACK PLATE
    LOWRANCE GHOST
    LOWRANCE HDS12 CARBON
    LOWRANCE HDS9 CARBON