I wanted to try 10, 15 or 20 % airplane or heli fuel, but I see there are fuels for 2 & 4 cycle. My question is, do I have to get the 2 cycle one ? And do I have to re-tune my engine once I use this new type of fuel ? I guess I am right....by the way, the airplane fuel are cheaper than car fuels. Before I forget, how about my glow plug, do I have to change it to cold or hot plugs ? I have an HPI .12 SS engine, just for the info.

Any response are most welcome.