Glow engines run alcohol as the majority of their fuel.
25-30%on 30 % nitro engines is not excessive oil - been there - a lot !
The alky is a drying agent
gasoline is --made from oil!!
not much oil needed with gasoline -in a two stroke enviroment .
But it should be able to stand up under lotsa heat --compared to alky fuel.
Alky does produce more power --ONLY because you burn (with oxygen) a lot more fuel
the air to alky mix will run from durn near 3-1 (lotsa nitro) on up to 6-7 to one
Gasoline is 12-1 --on up to 20- 1 (thank's to Honda)
Anything that makes glass --has silicone coming from somewhere - I can't imagine it -- but silicone aluminum may break down into glass under 1000+ heat --never seen it .