Best oil &mix ratio for ’57 5.5 Johnson outboard

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  • June 20, 2020 at 2:54 pm #206211
    GEORGE STEWART
    Participant

      Hi, I would like a recommendation on best oil and mix ratio for a newly acquired ’57 Johnson outboard, probably not rebuilt.

      Thanks!

      June 20, 2020 at 2:59 pm #206212
      dave-bernard
      Participant

        US Member

        16-1

        June 20, 2020 at 9:18 pm #206239
        labrador-guy
        Participant

          US MEMBER PAY BY CHECK

          George, welcome, to elaborate some on that mixture. The motor you have has only bushings for bearings. If you want it to last 16 to 1 will help. I only use TCW3 synthetic oil. The motor smokes at startup but when it get warm it is fine.

          dale

          June 20, 2020 at 10:22 pm #206248
          Mumbles
          Participant

            Any outboard oil rated TCW III and mixed at 16:1 will keep your motor happy.

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