Just woundering if it makes a diffrence going from 16:1 to 20:1 and so on. Is there any benifit/gain or is the only purpose is to produce less smoke?
Ditto and is one reason guys, like me, who run our mix @ 100:1 need to go small on our main jets. Less oil to gasoline and you'll have to go leaner on the fuel to air mix.Less oil means more fuel which means engine runs rich.
Engine should be tuned to a certain oil mix.
I just swapped my Softail from 25 to 1 to 40 to 1 and now it 4 strokes and needs a re tune.