RE: Top Flite B-25 ARF (Tecnical, tips, suggestions)
Dave,
Try Coolpower multi 15% full synthetic, this is all I use and nothing else. I have tried many fuels and got rusted bearings...with coolpower i now wear out bearings of old age no rust and I get 9600 rpm with 12 x 8 3 blade MAS. Better fuel better results. Avoid using high nitro in those engines since it is costly and those are not exactly made for it.
Give it a try
Normand