When it comes to your prized engine in your radio controlled car, truck or buggy, you don't want to take chances with your fuel. Using the wrong fuel can cause hard starting, poor performance, and excessive engine wear. Some fuels can actually destroy engines, filling them full of deposits and corrosion. Over a thousand hours of dyno testing and real-world running was invested to develop the formula for Nitro-X. Today that formula has been proven in hundreds of thousands of engines to provide incredible performance and excellent engine life. Our NTX-20 Has been specifically formulated to suit the TRAXXAS TRX 2.5 engine which requires special lubrication and heat control. You can trust Nitro-X in your engine. Don't take a chance with anything else.