I have many thoughts
1. I don't have E85 station near by so the experimenting with E85 remains a "theory" area

2. Gas glow benefits for me mostly with the fuel economy - engine+fuel is lighter in the plane. Mixing E85 is pointless for me, as does not achieve my primary goal.

3. I'm approaching all "fuel additives" that supposed to create power boost or better fuel economy the same way as (like we said in Poland) "a dog approaches a hedgehog" . I have assumption, that if something needs to be in a gasoline for better engine treatment, probably it is already added at the refinery. The same is with "oil additives". You may get better power, but you don't know, that you may hurt your engine.

I'm still driving my 95 Tacoma (4x4) with 2.7 inline engine. This truck has almost 240k miles and the smog test (mandatory in California) never changed for all these years. On the cheapest gasoline in town (Arco 87oct) I have 21mpg every time. There is no light truck with better mileage. The only thing I do is oil change every 5k miles (whatever brand Toyota Service puts in there).

I recall, AV8TOR already experimented with acetone (over 2 years ago), and Walbro carb did not like it at all.

I was about to experiment with OS 3500 converting it for Walbro and gas-glow, but I sold the engine before I started the project. Maybe it would make sense to modify some small RC engines (I have few old .40 size) to run on gas-glow would be good idea. having 15 minutes of flying from 2oz fuel tank . But I guess, I would have to modify the carb for proper fuel-air mixture.