I run this in my Yamaha Banshee @ 32:1, also in an air cooled RM80 @ 24:1. Likely next in my Stil MS290 farm boss @ 48:1. Banshee is sort of the reason why I went with this everyone out west uses Klotz or bean oil. Here on the east coast I wouldn't use bean oil at these temps 40 or below. The Banshee also has two cylinders and is very thirsty for fuel. I have switched to this at $.31/oz and seem to be having good luck @ 32:1. Poulan 2T viscosity is comparable to Dino 2 cyl oil. The Dimethyl ester seem to get a lot of praise for its 2 cyl lubrication properties, and seems to be a low ash product for air cooled 2T.