RE: another darn ryobi post (ryobi performance modification, analysis and comparison)
the thing about the gas/glow setup is you have no ignition system other than a glow plug (you loose that pound completely), you are using 1/3 glow fuel and the rest gas, the glow fuel used is the cheapest they have at the hobby shops, I think I get it for $13 a gallon, nearly the same run time as gas. Sure it's a bit more expensive to run than regular gas engines, but not too bad