2stroke oil- full,semi or neither

[gasser]

It takes more mineral oil in your fuel mix to give the same protection as synthetic so you don't necessarily save money by using a non-synthetic. My personal guide for mixing fuel is at 36/1 for mineral oil(Yammalube), 43/1 for semi-synthetic(Klotz), and 60/1 for full synthetic(Amsoil Dominator or Intercepter). In the 300 gasser the oils flashpoint is very important if you like to lug the bike or ride tight technical terrain. Chose an oil with a flashpoint below 100 degrees centigrade (210 fahrenheit). You can research a specific oil online to find it's flashpoint under technical details. A high flashpoint oil like Motul 800 will load up your engine and exhaust and cause it to run crappy at best or foul plugs at worst.