What does 0w20 represent?
2 Answers
0w20 belongs to four-stroke engine oil, and this numerical value represents the viscosity grade of the engine oil. Below is the extended information about 0w20: 1. "W" stands for "winter," indicating its use in winter. The smaller the number, the better the fluidity at low temperatures and the stronger the cold resistance. 2. The number before "W" represents the viscosity under low-temperature conditions. The smaller the number, the better the fluidity at low temperatures and the stronger the cold resistance. 3. "20" refers to the viscosity at 100°C. The larger the number, the higher the viscosity and the stronger the high-temperature resistance.
I usually drive my Toyota Corolla, taking the highway every week to pick up and drop off my kids. During the last maintenance, the mechanic recommended 0W20 engine oil, which got me curious. This actually refers to the viscosity grade of the oil. The '0W' means that in cold winter temperatures, the number 0 indicates the oil flows smoothly like water when starting the engine in cold weather, preventing any jamming and providing extra protection for the engine. The '20' indicates that at high temperatures and high speeds, the oil maintains a moderate thickness, reducing friction and helping you save fuel. After switching, I noticed smoother acceleration and a slight drop in my monthly gas station expenses. However, older cars are better off not using this viscosity—my neighbor's old Ford runs fine with 5W30. Before changing your oil regularly, check the owner's manual to see what viscosity is recommended.
