Lubrication: The primary purpose of motor oil is to lubricate metal parts within the engine. By reducing friction between moving components, it prevents wear and tear, ensuring smooth operation.
Cooling: Motor oil also plays a crucial role in cooling the engine. As it circulates, it absorbs heat generated during combustion and transfers it away from critical components. This helps maintain optimal operating temperatures.
Sealing and Protection: The oil forms a protective layer on piston rings and cylinder walls, sealing gaps and preventing leaks. It also shields engine parts from harmful elements like sludge, acid, water, and rust.
Cleaning: Over time, engines accumulate acids and silicon oxide. Motor oil acts as a cleaning agent, removing these deposits and maintaining engine cleanliness.