Reply To: 1967 3 hp Johnson compared to a 1955 3 hp

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June 28, 2026 at 1:37 pm #323173
JACQUES
Participant

    jsut follow what he manuf  saysalthough in theearly days  SAE30 was the usual oil to use.  today with TWC3  i use 1L/25L  on all oldies

    no problems so far.

    to service oldies download the bible…. good for J&E

    https://www.socalaomci.com/library/johnson_service_manual_10th_edition.pdf

     

     

     

    Joining AOMCI has priviledges 🙂