I would think that the Saito engines with their higher than normal compression ratios (10:1 I believe) would run ethanol better than the glow engine 2-strokes but I wonder if the 2-strokes keep the glow plug hotter than the 4-strokes? I am going to do some more experiments with gas/glow on glow except use E85 and 10/18 glow fuel at 2:1 with some extra oil added to get 15% for the bushing conrods in the smaller engines. This may be just the ticket for my smaller engines in the 40-50 size range. It's amazing how much fuel I'll burn in my Raptor 50 heli. The time just seems to fly when I fly. -Tom