Reply To: 1955 5.5 Johnson fuel mix?

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June 11, 2019 at 1:44 pm #177143
Don
Participant

    US Member

    I would definitely stick with the original 16:1 recommendation, especially for the reasons mumbles stated….While it is true that oils have improved over the years, I wouldn’t risk it….The beauty of these engines is that when properly tuned, they barely smoke at all at 16:1, these engines don’t foul plugs either.