Non- renewable energy is defined as energy obtained from natural resources whose formation time is milions of years, in this final project makes alternative fuel with a mixture of methanol and castor oil. How is the efficiency of methanol with castor oil mixture of with castor oil as a fuelfor the air craft efficiency of a Unmanned Areal Vechicle (UAV) Super Heavy, and engine performance. This research method is to do a comparison of castor oil methanol with a ratio of 3: 1 and 4: 1, and test engine performance and fuel efficiency. The conclusion is the best result is a 4: 1 mixture found power 2, 43 hp, torque 7, 32 Nm, and the fuel efficiency is idle with a flight time of 9.00 minutes spending 70 ml of fuel.