What Are the Engine Oil Grades for Summer Use in Cars?

[DiKhloe]

The viscosity grade at 100 degrees is the primary reference for summer engine oil. The summer engine oil grades for cars include: 20, 30, 40, 50. The larger the number, the higher the viscosity and the higher the maximum applicable temperature. Winter engine oil grades are: 0W, 5W, 10W, 15W, 20W, 25W. The symbol W stands for Winter, and the smaller the number before W, the lower the low-temperature viscosity, the better the low-temperature fluidity, and the lower the minimum applicable temperature. Engine oil, also known as motor lubricant, serves functions such as lubrication and wear reduction, auxiliary cooling, sealing and leak prevention, rust and corrosion protection, and shock absorption for the engine.