The ratio used should be the one suggested on the label of the chosen oil. Vintage snowmobiles and motorcycles from that era suggested premix ratios ranging from 20:1 to 40:1. Conventional 2-stroke oils from the 70’s would have a fraction of the film strength of today’s sophisticated synthetic 2-stroke oils. Anyone who rode snowmobiles back …
FAQ what type of oil do i mix with the gas for a 1989 force 125 outboard
What is the fuel to oil mixture for an outboard motor?
Evinrude outboard motors made since 1964 require a 50 to 1 fuel to oil mixture using 6 gallons of gas per 1 pint of oil.
How do you mix oil and gas for a two stroke boat?
Two-Stroke Boat Motor Oil and Gas Mixing Tips. With a 50:1 ratio, for 50 litres of gas you need 1 litre (1000 millilitres) of oil. The easy way to figure it out, especially if you have an odd number, say 35 litres of gas, is to double the number of litres and add a zero (an extra decimal place) to get the number of millilitres of oil you need.
What is the fuel to oil mix ratio?
That is 50 parts fuel to 1 part oil and 100 parts fuel to 1 part oil respectively. By no means perfect but a good general rule. Once you’ve landed on the ratio you need actually do the mixing.
What is the gas oil ratio for a two stroke motor?
Here is a quick chart for a 50:1 ratio. Many of the other two-stroke motors we use around the cottage require a 40:1 ratio. For every 40 litres of gas you need 1 litre of oil, so the motor requires more oil per litre. This is often the case with chainsaws and some trimmers.