oil mixture

[NAB]

I just installed a SBT 650 in my Speedster boat, drained the fuel tank and the oil tank as I wasn't certain the previous owner used the correct oil and something caused the engine crank bearing to cease. How do I mix the oil and fuel and how much as I have a 27 Gal tank and I have a 6 gal gas can?

[Bryan Glynn]

50:1 - 2.5oz. oil/gallon of fuel. Mix in the external container then add it to the boat.