08-02-2019, 10:30 AM
I would go with the 40:1 on that motor. Its old (Babbit bearings notwithstanding) and better to run it rich than too lean. Your friend is right by the way. You can expect to oil fouled plugs more often though - amoung other things, but those are better than what happens to an under lubed engine. I have an old Yamaha and an even older Evinrude that I am currently (this week) changing water pumps and impellers on Keep em lubed and greased so they are happy in their old age.
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