What is SL10W-40 engine oil?
1 Answers
SL is the grade designation of engine oil, and 10W-40 is the model of engine oil. 10W represents the extreme temperature the oil can withstand in low-temperature environments, while 40 indicates the oil's high-temperature resistance. Different types of engines require different types of engine oil, which can be checked in the vehicle's manual. Below is some relevant information about engine oil: 1. Functions of engine oil: Engine oil lubricates and reduces friction, assists in cooling, seals against leaks, prevents rust and corrosion, and provides shock absorption. It is often referred to as the "blood" of a car. Choosing the right oil and changing it regularly can maintain the engine in good condition and extend its lifespan. 2. Choosing engine oil: When selecting engine oil, it's not about choosing the most expensive one, but rather selecting the right oil based on the characteristics of the car's engine and driving habits. It can be categorized based on winter and summer usage. For winter, the primary consideration is the low-temperature viscosity grade, while in summer, due to higher temperatures, there's no need to choose an oil with a better low-temperature viscosity grade.