What are the brands of automotive engine oil?
1 Answers
Common brands of automotive engine oil include Shell, Mobil, Castrol, Total, etc. When choosing engine oil, car owners need to have an understanding of the brands and also be able to identify the quality of the oil to avoid misconceptions that could affect the normal operation of the engine and lead to abnormal wear. Automotive engine oil has the following functions: 1. Lubrication and friction reduction: Forms an oil film on the surfaces of two sliding components to prevent friction during operation, ensuring smooth movement of the parts. 2. Cleaning and dispersion: High-quality oil can flush away dirt from component surfaces through oil flow, adsorb tiny metal fragments in the engine, and then rely on the piston oil ring to scrape them into the oil pan. 3. Cooling: The engine generates high temperatures during operation. When the oil reaches the operating parts, it absorbs heat and carries it away, aiding in the cooling of the components. 4. Sealing and leak prevention: This refers to forming a seal between the piston rings and pistons through an oil film, preventing combustion exhaust gases from entering the crankcase. 5. Rust and corrosion prevention: High-quality oil can adhere to component surfaces, preventing contact with air, acidic substances, and harmful gases, protecting the engine from corrosion by the atmosphere and water. 6. Shock absorption: When the pressure in the engine cylinder increases suddenly, the load on the pistons, piston rings, connecting rods, and crankshaft bearings becomes significant. This load is transmitted and lubricated through the bearings, cushioning the impact load.
