the safest mixture would be 32 to 1
If not using oil injection, the 115 hp Yamaha outboard will require a 50:1 ratio.
20:1
32:1 gas to oil mixture
If not equipped with oil injection, a 50:1 ratio is required. This is roughly one pint of 2 cycle oil, to six gallons of fuel.
30 liters of gas to 1 liter of oil
50:1 ratio
50.1
It would be wise to.At 32:1 ratio
50/1
It should be oil injected with a separate oil resivoir.
The oil to gas ratio will be 25:1, but if i remember correctly they are fitted with a autolube pump, unless its been disconected. Remember: 25 parts gas to 1 part oil.
i have ran 6ounces of 2 cycle oil to 1 gallon of gas