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  1. #1

    Default 3.0 OMC Engine Oil Type

    Stupid but necessary question..What type of oil should I put in my '89 Bayliner Capri OMC/Cobra 3.0L. The seloc manual only mentions that SAE 30W should be used. Should I use 5 W or 10 W - 30 oil? Also what viscosity gear oil should the out drive take? Thanks

  2. #2
    Honorary Moderator Emeritus Don S's Avatar
    Join Date
    Aug 2004
    Western WA.

    Default Re: 3.0 OMC Engine Oil Type

    Here is what Mercruser recommends, it's almost identical to Volvo's and since OMC hasn't existed for 10 years, they have nothing new.
    But that engine is still used today by Merc and Volvo.
    Basically, anything will work if you change it every 100hrs or yearly as the manual suggests.

    Don S.

    Please, no PM's (Private Messages) regarding boat/engine problems.
    That is what the forums are for.
    Only forum/moderator issues will be answered in PM's.

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