the reason most glow engines today need 20% oil is the bronz bushing they have for the conecting rod, if it was a roller bearing like a gas engine then it would only need 5%,

The reason for a little more oil in glow fuel running in a gas engine is methanol has 0 lubrication unlike gas thas is a petrolium based fuel so the mix is about 25 to 1 for methanol instead of 40 to 1 for gas.

for the carb and adapter is like $50.00 so before you buy a new motor you might want to give it a try.heck if you decide not to use it then I will buy the adapter and carb from you they are great for conversion engines.

Darin