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Motor oil also has a "winter and summer", you add the right?

Time：

2021-11-12

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Car oil change is the key to the car maintenance process, adding the right oil is critical, in the winter and summer temperatures are different, there is a difference in the oil added to the car. Let's learn more about it.

The most important characteristic of motor oil is its viscosity. The oil has the viscosity characteristic to provide a protective film to all parts of the engine.

Viscosity of oil at different temperatures

When the temperature is low, the viscosity of the oil becomes larger, causing difficulties in cold starting and twice the usual wear and tear on the engine, so in this case, the oil with good low temperature performance and lower viscosity is usually chosen, that is, winter oil.

At high temperatures, the viscosity of the oil will drop when it is heated, and the oxidation resistance will become poor, which will easily deteriorate and even cause serious wear between parts and components, so at this time, a motor oil with high viscosity should be used, that is, summer motor oil.

Meaning of oil markings

We often see such markings on the oil barrel, such as "5W-40", "5W", "40" and so on.

These are the viscosity markings of the oil, and the specific meaning is like this: the "W" stands for winter, which means winter oil. Only the number identifies the oil as a summer oil.

In winter oil, the smaller the number in front of "W", the better the low temperature fluidity of the oil and the more suitable for use in low temperature environment.

"40" means it is suitable for use in 40°C environment, and "30" means it is suitable for use in 30°C environment, and so on.

At the same time, "5W-40" combines these two marks together to indicate that it is a winter and summer oil, which can be used both in winter and summer.

Winter oil

Grade: 0W 5W 10W 15W 20W 25W

Applicable ambient temperature -35°C -30°C -25°C -20°C -15°C -10°C

Summer oil

Grade: 20 30 40 50

Applicable ambient temperature 20°C 30°C 40°C 50°C

Winter and summer oils

Grade: 10W-20 10W-30 10W-40 10W-50 15W-20 15W-30 15W-40

Applicable ambient temperature (°C): -25~20 -25~20 -25~40 -25~50 -20~20 -20~30 -20~40

We need to replace the lubricant at the right time according to the seasonal changes, especially in the northern winter when there is a big temperature difference, it is especially important to choose the lubricant, and it is best to replace the oil at the right time while maintaining the same brand and quality level.

Conclusion: The difference between motor oil is what many car owners do not understand, adding oil is also a key step in maintaining the car, I hope this article can help all car owners, especially the northern winter tens of degrees below zero car owners friends.

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