What does 5w20 engine oil mean?
1 Answers
Engine oil 5w20 represents the grade of the oil, where 5 indicates the lowest temperature in winter that can be used, which is minus 30 degrees. The smaller the number before W, the lower the low-temperature viscosity, the better the low-temperature fluidity, and the lower the applicable minimum temperature. The number 20 represents the summer flow viscosity, and the number after W indicates the viscosity of the oil at 100 degrees. The larger the number, the higher the viscosity. Engine oil classification: Engine oil is classified according to SAE viscosity grades. There are 6 types of winter oil, 5 types of summer oil, and 16 types of all-season oil. There are 6 types of winter oil: 0W, 5W, 10W, 15W, 20W, 25W. W stands for Winter, and the smaller the number before it, the greater the fluidity of the oil and the lower the applicable temperature. There are 5 types of summer oil: 20, 30, 40, 50, 60. The larger the number, the higher the viscosity of the oil, the stronger the high-temperature protection performance, and the higher the applicable temperature environment. There are 16 types of all-season oil: 5W20, 5W30, 5W40, 5W50, 10W20, 10W30, 10W40, 10W50, 15W30, 15W40, 15W50, 20W20, 20W30, 20W40, 20W50. Signs that a car needs an oil change: The engine noise increases, and the oil becomes thinner; the oil pressure warning light may come on, indicating low oil pressure.
