What Do the Numbers on Engine Oil Represent?
1 Answers
The numbers on engine oil represent the following: 1. The number before the 'W' indicates the oil's viscosity under low-temperature conditions; 2. The number after the 'W' represents the kinematic viscosity standard at 100 degrees Celsius. The functions of engine oil include: 1. Lubrication; 2. Assisting in cooling; 3. Cleaning; 4. Sealing and preventing leaks; 5. Rust and corrosion prevention; 6. Shock absorption and anti-wear. Engine oil can be categorized based on usage conditions: 1. Diesel engine oil: Selected according to the total mechanical and thermal load of the car engine and the severity of engine operating conditions; 2. Gasoline engine oil: Chosen based on the severity of engine operating conditions, additional devices in the car's intake and exhaust systems, and the production year.