1963 Johnson 40 HP

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  • August 24, 2026 at 11:51 am #327070
    Boonie
    Participant

      Canada Member

      Friend has a Johnson RDS-23 40 HP.  Decal says fuel oil ratio is 24-1 with SAE 30 motor oil. If he uses TC-W3 oil is 24-1 still the proper ratio. He was briefly running at 50-1. I stoped him.

      Dan

      August 24, 2026 at 12:47 pm #327072
      JACQUES
      Participant

        stay safe oil is cheaper than parts !!!  24/1 is  good for bugs anyway

        The blackfly song

        Joining AOMCI has priviledges 🙂

        August 27, 2026 at 8:04 am #327276
        Don
        Participant

          US Member

          I would stick with 24:1 as well.  An engine that is in good tune, and getting up to temperature will hardly smoke at all at 24:1

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