Is Driving Below 2000 RPM Fuel-Efficient?

[ParkerMarie]

Driving below 2000 RPM is fuel-efficient. Here is a partial introduction about engine oil: 1. Composition: Engine oil consists of base oil and additives. The base oil is the main component of lubricating oil, determining its fundamental properties, while additives are an essential part of lubricating oil. 2. Types of Engine Oil: The winter oil grades under the SAE lubricant viscosity classification are: 0W, 5W, 10W, 15W, etc. The symbol 'W' stands for winter, and the smaller the number before 'W', the lower the low-temperature viscosity, making it suitable for lower minimum temperatures. The summer oil grades under the SAE lubricant viscosity classification are: 20, 30, 40, 50. The larger the number, the higher the viscosity, making it suitable for higher maximum temperatures. The all-season oil grades under the SAE lubricant viscosity classification are: 5W-20, 5W-30, 5W-40, 5W-50, 10W-20, etc.