Im going to switch fuels from Odonnell 20% to Sidewinder 20%. Is there any special things I need to do when running the new fuel? Or can I just put the fuel in and run the car like normal. Im asking since they might have different mix of oil/nitro.

I pretty much just add the new fuel, let the engine idle for a few secs to adapt, and then make any tuning changes (if required), then run.

you should have no problems . You do need to let the engine adapt to the fuel though. Let it run for a few minutes. because not all fuel is the same. so have more oil than others.

Is SIDEWINDER = Cool Power Sidewinder Race that I found on TOWER website..?

Are they the same thing...? Thanks........