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

          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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