Re: 1935 Johnson Aero built 300 fuel mixture

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August 23, 2017 at 12:32 am #63663
Ron Devries
Participant

    Canada Member

    One argument to use some more oil is that a lot of these old motors don’t have much in the way of crank case seals and often the bushings are a bit worn. Adding a bit more oil will compensate some for the poor sealing, of course tightening up the sloppy bushings would be a better fix….