For one thing i never said 20% oil content will not work i just said that 20% is not needed for these engines. A lot of people including me will say if uyou run more then 20% oil content in the engine will actually hurt it. Thats just our opinions, everyone has there own opinions and for ryan t888 i undesrtand what your saying and thats fine. But i have never ran traxxas fuel and more then likely never will. Had some friends that ran it and had bad experiences. Thats y i run other fuel. But you do not need 20% oil content for the traxxas engine. As I said earlier with my experinece with my motor.