The manual (you need one)says 32:1. I use 44:1. The richer the mixture the better protection you have. The leaner the bike runs better. It kinda depends on riding style also. I would say that whatever ratio you decide to run stick with it. I run Klotz Super Techniplate. There is a wide variety of opinions about this topic. My opinion is that synthetic oils are more expensive for a reason. They work better. Don't mix oils either. If you aren't sure what's in it or you are changing brands or whatever, run the old gas out or drain it. NGK B8ES Plugs. Check out the jetting chart, oil mixture, perfomance mods and all that on search option too.
