Basically I just don't recommend using Gas/Glow in small glow engines. Too many problems with the bushed rod and it's lubrication needs, the fact that the engine is designed specifically for methanol, etc. Overheating is a possible problem due to the fact that gasoline engines run hotter as well.

Also, I didn't personally have luck with E-85 in the gasoline engine conversions to Gas/Glow, but some here in the forum have had various levels of success with it. Do a search for E-85 in this forum.

If you are just looking to economize, one can mix small amounts of gasoline with glow fuel to stretch it. Just make sure you keep the overall oil content correct. If the particular engine has no silicone parts like some pumped engines have, it should cause no damage, and the needle won't be too sensitive unless you go to high percentages of gasoline. I would try 10% to start.

AV8TOR