An air-cooled diesel generator or engine does not require a water pump, radiator, temperature gauge, or hoses. There is no coolant to freeze, leak, evaporate, boil, become contaminated, or cause corrosion within the cooling system.

An air-cooled diesel engine is an internal combustion engine that runs on diesel oil. It transforms the heat energy created during fuel burning into electrical or mechanical energy. Most horsepower engines are employed in geological research, oil extraction, the military, and other niche industries.