What season is 5w engine oil, and is it 5w 30 oil or 5w 40 oil used in summer?

W stands for winter, and the number in front of w represents the freezing point temperature. The freezing point temperature corresponding to 5W oil is -30. If the local temperature is not so low, this oil can be used as an all-season oil.

The higher the number in front of it, the better the low temperature fluidity of the engine oil, the lower the ambient temperature available for use, and the better the protection ability of the engine during cold start, such as 5W represents external low temperature resistance of -30 °C, and 20W low temperature resistance is -15 °C.

The model number is marked on the outer packaging of the oil drum, which is composed of English letters and Arabic numerals. Take "SF15W 40" as an example.

The first letter indicates the performance of the oil, for example: "S" means gasoline engine oil, "C" means diesel engine oil; The second letter indicates the quality grade of the oil, which is indicated by the letters A, B, C, D, E, F-, and the further back it is, the higher the grade of the oil. With each letter from "SA" to "SJ", the oil will perform better than the previous one, and there will be more additives in the oil to protect the engine.

The lower the letter, the higher the quality grade, and most of the oil grades in international brands are above the SF grade.

15w 40" is the viscosity grade marker, which refers to the thickness or consistency of the engine oil at a certain temperature (low temperature -18, high temperature 100). With " as the boundary, the number ending with "w" in front of it is a low temperature viscosity grade, which has six grades, and the number after "" is a high temperature viscosity grade, which has five grades, and the larger the number, the greater its viscosity. There is only one viscosity grade designator, which indicates that it is a single grade oil, which can only be used in winter or summer; There are two viscosity grade designations that indicate that it is a multigrade oil, which can be used in winter and summer.

W is the meaning of winter, so it is winter oil, W has 0, 5, 10, 15, 20 in front of these numbers, the better the cold start performance at low temperatures.

5W indicates the viscosity in winter, and the viscosity of No. 5 is relatively low, which is easy to start for the engine at low temperature, and is suitable for use in northern areas.

5W-30 and 5W-40 are two different oil viscosity grades, the viscosity of these two oil is not better than the other, in the case of using the same grade of base oil, 5W-30 and 5W-40 are the same in quality, but the parameter values of the oil are different.

The first 5W represents the low temperature fluidity of the oil, and the smaller the number in front of the W, the better the low temperature fluidity. 5W means that this oil can cope with temperatures above -30 degrees. The latter 30 and 40 represent the high temperature kinematic viscosity, the kinematic viscosity of 30 oil is between 10-12, and the kinematic viscosity of 40 is between 13-16, that is to say, 40 oil is more viscous than 30 oil.

In the summer, it is with 5w-30 engine oil.

W stands for winter, the number in front of W represents the freezing point temperature, the corresponding freezing point temperature of 5W oil is -30, and the number behind W represents the kinematic viscosity of the oil at 100, the higher the value, the higher the viscosity. The 5w-30 oil is the most adaptable, suitable for all models and all ambient temperatures, and can be used around the clock even in winter or in the north. In principle, 5w-30 is ideal for use in summer.

Hello, I just maintained it a few days ago, and it will work with 5w-30. If my answer is helpful to you, please set it to.

The viscosity of 5W-40 is greater, and the drawing speed is better.

If it is a non-Japanese and Korean car, 5W-40 is recommended.

5w30 is sufficient.

5w30, the minimum operating temperature is minus 30

The winter oil grades of SAE lubricating oil viscosity classification are: 0W, 5W, 10W, 15W, 20W, 25W, the symbol W represents winter, the smaller the number before W, the smaller the low temperature viscosity, the better the low temperature fluidity, and the lower the applicable minimum temperature;

The higher the number, the greater the viscosity, and the higher the applicable maximum temperature;

Aconi lubricants are the answer for you, 5w40 is the all-season oil.

The 5w20 model oil can be regarded as a four-season engine oil.

There are three types of engine oil used in automobiles, one is the engine oil used in the summer, one is the source resistant engine oil used in the winter, and the other is the four-season engine oil.

Generally speaking, the viscosity of engine oil is lower in winter, the viscosity of oil is higher in summer, and the viscosity of oil in all seasons is moderate.

The W in the engine oil represents the winter, the model of winter oil is divided into 0W, 5W, 10W, 15W, 20W, 25W, the lower the number in front of W, the lower the viscosity of the oil, this type of oil has good low-temperature fluidity, suitable for low temperature environment.

The number after W represents the temperature that the oil can adapt to, and the higher the number after the W, the higher the temperature at which the oil can adapt.

The role of motor oil:

1. Engine oil has the role of lubrication, and the oil can form a layer of oil film between the moving parts, which can reduce the friction of the internal parts of the engine and reduce wear.

2. The engine oil has the function of cooling, and the engine will generate heat during operation, and the oil can take away the heat, which can better protect the engine.

3. The engine oil has a cleaning effect, and the engine will produce metal debris during operation, and the oil can take these debris away.