What is the purpose of adding engine oil to a car?
1 Answers
Adding engine oil to a car serves the following purposes: 1. Reducing friction and high temperatures: A sufficiently thick oil film separates the surfaces of relatively sliding parts, thereby minimizing wear. 2. Sealing function: Engine oil can form a seal between the piston rings and the piston, reducing gas leakage and preventing external contaminants from entering. 3. Anti-rust effect: Lubricating oil adheres to the surface of parts, preventing contact with water, air, acidic substances, and harmful gases. 4. Cushioning effect: When the pressure in the engine cylinder rises sharply, suddenly increasing the load on the piston, piston skirt, connecting rod, and crankshaft bearings, the lubrication provided by the bearings helps cushion the impact load.