What are the advantages of an air-cooled engine?

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Air-cooled engines offer benefits such as not requiring coolant or a cooling system, being lightweight, easy to maintain, and having a simple structure. An air-cooled engine uses air as the cooling medium. It features cooling fins cast on the outer walls of the cylinders and cylinder head, and a cooling fan forces high-speed air over the surfaces of these fins to dissipate the heat generated by the engine, thereby cooling it. The function of an engine is to convert the thermal energy from gasoline or diesel into mechanical energy by burning the fuel in a sealed cylinder, causing the gas to expand and push the piston to perform work. Depending on the power source, automotive engines can be categorized into diesel engines, gasoline engines, electric motors for electric vehicles, and hybrid engines.