How to distinguish the performance of automobile engine oil?

Automobile oil sorting skills.

From the perspective of the vehicle use environment, in the northern region, the minimum temperature is minus 30 degrees Celsius, and it is not recommended to use engine oil with a viscosity of more than 10w. If the oil is viscous, it will lead to difficulty in starting, and the vehicle at the moment of starting, the viscous oil precipitates in the oil pan, and it is too late to reach the surface of the parts, and the engine is in a state of "dry friction" without oil, and the friction resistance is greatly increased. This not only costs the battery, but also hurts the car.

However, while the apparent viscosity is low, it is also necessary to consider whether the pour point is lower than the local air temperature, which indicates the minimum temperature at which the oil can flow in a low temperature environment. If the minimum temperature is above minus 20 degrees Celsius, then 10W of lubricant is enough.

Hello! SAE viscosity grade (how to choose oil in different seasons and regions) takes "5W-40" as an example, look at the label of the engine oil, mainly look at two values, the first is the main label, which is the "5W". Among them, W stands for Winter is the meaning of winter, and the higher the value in front of W, 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.

w"The following number is the viscosity index of the engine oil at high temperature, the larger the value, the higher the viscosity, the higher the viscosity, the better the engine protection, but the more fuel is consumed;

API (American Petroleum Institute), oil grade classification from SA SN and so on, this label is actually to describe the quality of engine oil, the lower the ranking of the letter after S, the higher the quality of the engine oil, so far, the SN level is the highest.

At present, the engine oil on the market can be simply divided into mineral oil and synthetic oil according to the different base oils, and synthetic oil can be divided into semi-synthetic engine oil and fully synthetic engine oil.

1. Mineral oil: The mineral oil base is obtained from the first refining, that is, after the first oil and gas, gasoline, diesel, kerosene, and heavy oil are proposed, the mineral oil base is then refined, and the last bottom is asphalt. The mineral oil-based color is transparent with a light amber tint, just like the color of salad oil.

Generally, the cost of mineral oil is very low, but because the mineral oil base is easy to oxidize, although various imported additives are added to mineral oil today, the service life is still about six months.

2. Fully synthetic engine oil: The engine oil only contains PAO or ester compounds (ester), all of which are artificially made by chemical means, which was first used in the aviation industry, and then also used in racing cars, and is now very popular in cars. The advantages of fully synthetic motor oils are high cleanliness, high fluidity, good cooling ability, and excellent oxidation resistance.

3. Semi-synthetic engine oil: Semi-synthetic engine oil refers to adding a part of mineral engine oil to synthetic engine oil, and the ratio of mineral oil to synthetic engine oil is 4:6.

It is characterized by having the advantages of both synthetic motor oil and being less expensive than fully synthetic motor oil. The performance of semi-synthetic engine oil in all aspects is definitely weaker than that of fully synthetic engine oil, but it has an advantage in terms of **, and the replacement cycle is slightly shorter than that of fully synthetic engine oil.

There are many types of engine oils for automobiles depending on the thickness and the atmosphere of the environment in which they are used.

There are 0w-20, 0w-40, 5w-30, 5w-40.

According to the composition, it is divided into mineral oil, semi-synthetic, fully synthetic and advanced fully synthetic.

The ingredients are definitely high-grade, fully synthetic, better than semi-synthetic, better than mineral oils.

Generally, Japanese cars use 0W-20, and German cars use 5W-40.

Hello, the choice of engine oil varies according to the season and place, and in winter, when the temperature is low, you need to use a lower viscosity grade oil to improve the pumping capacity and reduce the cold start wear. In the summer, high viscosity grades are used to increase lubricity, because the increase in temperature will reduce the viscosity of the oil, which can be compensated for by using a high viscosity oil. Each brand of motor oil is available in multiple viscosity levels.

Therefore, when changing the oil, it is important to determine not only the brand, but also the viscosity level. Different ambient temperature and viscosity level should be used below 1 25 SAE5W 30, 2 25 above SAE10W 30, 3 15 above SAE15W 40, 4 5 above SAE20W 50, 5 0 above SAE15W 40, can also use single-grade viscosity oil, of course, some of the latest engines in order to reduce fuel consumption and emissions, usually require the use of low viscosity grade oil, such as 5W 20 or 5W in all seasons 30, this needs to refer to the vehicle maintenance manual, the manual does not clearly require the use of low-viscosity oil all year round, must be selected according to the ambient temperature (i.e. season), but also note that the viscosity level of the oil must also consider the load, speed and wear of the engine. If the engine is under heavy load, low rpm or heavy wear, you should use a more viscous oil, and vice versa, you should choose a less viscous oil.

It should be noted that the selection of engine oil should still be subject to the model recommended in the manual, such as the recommended use of SJ, do not use SG, now there are some so-called Honda special oil, Toyota special oil, etc., in fact, many of them have just reached the oil standard of the model, hang the name of a special oil, you can sell a **, so the owner in the selection of engine oil, look at API and SAE is the best standard. However, it is recommended to use the brand of a large manufacturer when choosing engine oil, and some small factories also have the logo of SL and SJ, but there is no credibility.

Hello! The type of engine oil used in the car is related to the engine, and the temperature of the use area, which will be explained in detail in the general car manual, and it is best to buy and use a fully synthetic engine oil that meets the specifications.

Engine oil is composed of two parts: base oil and additives, base oil is the main component of lubricating oil, it determines the basic properties of lubricating oil, additives can make up for and improve the lack of base oil performance, give some new properties, is an important part of lubricating oil.

Double crown super anti-wear lubricant.

Due to the different base oil composition, the various brands of engine oil on the market can be divided into mineral lubricating oil, synthetic lubricating oil and fully synthetic lubricating oil. Mineral lubricants are the lowest grades, and the cheapest; Fully synthetic lubricants have the highest grade and lubrication effect in a brand**; Synthetic lubricants fall somewhere in between.

General mineral lubricating oil belongs to the low-end or old vehicles used in the oil, the vehicle ** is generally used in cars below 100,000, of course, this part of the vehicle can also use synthetic lubricating (semi-synthetic) oil to replace it, lubrication energy-saving effect will be better. Fully synthetic lubricants have good performance in high and low temperature fluidity, and are suitable for use in various harsh conditions, mostly used in turbocharged engines, high-end luxury cars and racing cars. Synthetic engine oil is between the full synthetic engine oil and mineral oil between a type of engine oil, the industry also calls it semi-synthetic engine oil, from the name can also let wax see, semi-synthetic engine oil can generally be used in some low-end vehicle engines, at the same time can also be used as a buried lead part of the high-end car mileage, there is a phenomenon of burning engine oil (especially German cars) use.

Shuangguan synthetic lubricating oil adopts the fully synthetic base oil of the internationally renowned brand lubricating oil factory and adds the unique molybdenum technology super anti-wear ingredient additives, which has a good anti-wear and anti-friction, extreme pressure resistance, anti-rust and anti-corrosion and other lubrication effects, and has an obvious effect on the vehicle engine to reduce consumption and noise.

Now many people have their own car, and for car maintenance I believe that many people are not very unfamiliar, and car maintenance here to talk about engine oil, there are three categories of classification of engine oil, one is semi-synthetic engine oil, one is mineral engine oil, and the other is fully synthetic engine oil, these three different types of engine oil are not the same on the market, among which only fully synthetic engine oil is the best, and at the same time, it is also the most expensive. How to judge what kind of balloon your car is suitable for can be judged according to the car's maintenance manual, if the car maintenance manual says that the engine needs to use semi-synthetic engine oil, then we can put semi-synthetic engine oil on the car engine when we maintain, and fully synthetic engine oil is the best viscosity, you can also use a full synthetic machine.

1. There are three categories of classification of automobile engine oil.

When it comes to the oil of the car, I believe that everyone is not very unfamiliar, the main role of the engine oil is attached to the inside of the engine block, so that it can play a lubricating role, thereby reducing the friction between the engine block and the piston rod, so as to reduce the resistance and greatly improve the power requirements of the engine, and the engine oil is divided into three categories, namely mineral engine oil, semi-synthetic engine oil and fully synthetic engine oil, of which mineral engine oil and semi-synthetic engine oil should be replaced every 5000 kilometers, The fully synthetic engine oil needs to be replaced every 10,000 kilometers, so it is the most cost-effective to replace the fully synthetic engine oil in terms of time cost. <>

2. Judge what kind of engine oil is suitable for use according to the car maintenance manual.

There is generally a car maintenance manual before the car leaves the factory, as long as we can know what kind of engine oil our car is suitable for according to the car maintenance manual, and various items such as daily maintenance will be understood, but now most of the cars on the market are using fully synthetic engine oil, because the viscosity of the fully synthetic engine oil is better, which can effectively improve the power output of the engine and save fuel consumption. <>

3. Summary. In general, car oil is one of the most important items in our car maintenance, and there are three categories of engine oil, namely mineral engine oil, semi-synthetic engine oil and fully synthetic engine oil, among which fully synthetic engine oil has better viscosity, which can effectively reduce the internal friction of the engine, thereby extending the life cycle of the engine, and can also save fuel consumption for your car. <>

There are three categories: mineral engine oil, semi-synthetic engine oil, and fully synthetic engine oil. First of all, find out that each car has its own oil grade specifications, and then refer to the opinions of the 4S shop staff, and at the same time understand the different letter representations of different specifications of engines, so that you can make a comprehensive judgment.

For automobile engine oil, there are mainly semi-synthetic engine oil, ordinary mineral oil, fully synthetic engine oil, generally speaking, choose some fully synthetic engine oil as much as possible, its quality and performance are the best; If you want to determine what kind of engine oil is suitable for your car, you can read the relevant maintenance manual, or you can also go to a special 4S shop for consultation.

Including mineral oil type, semi-synthetic, fully synthetic, three-filter oil. It can be judged according to the quality grade and viscosity index. Try to change the oil according to the original factory specified oil.