Lubrication: Engine oil acts as a lubricant, reducing friction between moving parts in the engine. It creates a thin film between metal surfaces, preventing direct contact and minimizing wear and tear. This helps maintain the engine's efficiency and lifespan.
Cooling: Oil helps cool the engine by absorbing heat from critical components such as pistons, bearings, and cylinder walls. The oil then carries this heat to the oil cooler or oil pan, where it dissipates into the surrounding environment.
Cleaning: Oil helps clean the engine by carrying away dirt, debris, and metal particles that may accumulate during operation. These contaminants are trapped in the oil filter, which needs to be replaced regularly to maintain the oil's effectiveness.
Sealing: Oil helps create a seal between piston rings and cylinder walls. This prevents combustion gases from leaking into the crankcase, maintaining compression and maximizing engine performance.
Corrosion prevention: Oil contains additives that help protect metal surfaces from corrosion caused by moisture, acids, and other corrosive substances that may enter the engine.
Hydraulic functions: In some engines, oil is also used to operate hydraulic systems, such as variable valve timing (VVT) or hydraulic lifters.
Overall, engine oil plays a crucial role in ensuring the smooth operation, longevity, and performance of a car's engine. Regular oil changes and the use of high-quality oil are essential for maintaining a vehicle in good working condition.
