40:1 you can go with 32:1 might smoke just a little bit more.
50:1
.80 for 1 qt.
50:1 ratio 16 oz 2 stroke marine motor oil to every 6 gallons of gasoline this is most common I use this mix ratio in my 80 hp mercury spitfire
It is 80/1.
40 parts gasoline one part two cycle oil
ratio = 80% : 20% or 80 : 20 ot 8 : 2 or 4 : 1
The ratio of 120 ml to 80 ml is 3:2 and the ratio of 80 ml to 120 ml is 2:3.
The ratio is 270 : 80 which can be simplified, if required.
it will take any 2 stroke oil just mix it with petrol with a ratio of 25/1
80/20 = 4/1
The 1978 model, 80 hp Mercury requires a 50:1 ratio, roughly one pint of 2 cycle oil, to six gallons of fuel.
32:1 i called a local dealership and thats what i have ran ever since and never had a problem with my 2000 rm 80 still runs great