The Oil Less Four Cycle Multi Fuel Engine Performance program has made the study of 4-cycle engines a simple task and opened the door for the student to conduct multiple experiments in alternate fuels. This patented and unique engine features transparent engine construction, which exposes all the moving parts of a 4-cycle engine. Includes variable timing and compression. Since the is oil-less too, it enables the students to observe clearly the crankcase components and internal combustion of the engine.