For gas/oil engines, I agree with you. For Gas/Glow, I disagree. I treat my Gas/Glow engines just like my pure glow engines; I run the engine out dry, and then inject an after run oil. (I just use auto trans fluid, Marvel is good as well.) I have Gas/Glow engines that have been run like this for well over a year, (two years?) with no carb problems. My Katana sat for a year without being started. I fired it up and it ran perfectly with no adjustments or carb service needed.

The methanol in the Gas/Glow mix attracts water, and the nitro can form acids. Neither is good for the engine when left inside during storage, just as is true when running pure glow.

AV8TOR