The main function of an oil pump in an engine is to circulate oil throughout the engine's internal components, ensuring proper lubrication and reducing friction between moving parts. As the oil pump operates, it draws oil from the oil pan, pressurizes it, and distributes it to various engine components, such as the crankshaft, camshaft, piston rings, and valve train. The pressurized oil creates a protective film between these metal surfaces, minimizing friction and wear, thus extending the engine's life.
