Tech Info gives ratio as 3/8 pint of 30 weight motor oil to gallon of gas.
Today's TCW 3 outboard motor oil is far better than motor oil.
3/8 pint of TCW 3 (6 ounces) to gallon of unleaded regular should work
well with the fully jeweled powerhead. (Fully Jeweled is advertising hype
for anti friction bearings)