???!!!!1

All kinds off crazy here! Let me get on my rocking horse.

50% Nitro is used in nitro boats. You have to drop the compression of the engine and time the intake and exhaust ports real close to make it work. Racing only.

Not a good idea, It'll kill your engine. Rc cars are 30% tops.

Airplanes use very low nitro %. 0-15. Those engines are relatively detuned compared to race engines. Thats why they last forever. If you need more power you build the plane for a larger engine, not stuff more nitro in. Even if the prop keeps the engine cool you still need the proper mixture, plug, and port timing. Sport planes use low nitro. Never seen a racing planes engine, because they are lame.

Nitro is mostly just an oxidizer. It deosn't lube anything.

DO NOT USE 50% IN YOUR CAR!1!