Motor oil is called the "blood" of automobiles. What role does it have? How often can I change it? How to change? What brand to change? This article will give you a detailed explanation of various issues related to engine oil.
Before you say something, you must first know what it is? What is its function?
The full name of the engine oil is: "Engine Lubricant". As the name suggests, the function of engine oil is to lubricate and reduce wear, assist in cooling, seal and prevent leakage, prevent rust and corrosion, and cushion the engine. Engine oil is composed of two parts: base oil and additives. Base oil is the main component of lubricating oil and determines the basic properties of lubricating oil. Additives can make up and improve the performance of base oil and give some new properties. It is lubrication. An important part of oil.
How long can I change the oil?
In the minds of ordinary people, the engine oil is changed every 10,000 kilometers. In fact, this statement is inaccurate. To be precise, when to change the oil depends on what oil you add.
First of all, if you use mineral oil, you should change the oil within half a year or within 3000 kilometers. If you use semi-synthetic oil, you should change the oil within half a year or 5000 kilometers. The fully synthetic engine oil is the best, and it can be changed ev
Motor oil is called the "blood" of automobiles. What role does it have? How often can I change it? How to change? What brand to change? This article will give you a detailed explanation of various issues related to engine oil.
Before you say something, you must first know what it is? What is its function?
The full name of the engine oil is: "Engine Lubricant". As the name suggests, the function of engine oil is to lubricate and reduce wear, assist in cooling, seal and prevent leakage, prevent rust and corrosion, and cushion the engine. Engine oil is composed of two parts: base oil and additives. Base oil is the main component of lubricating oil and determines the basic properties of lubricating oil. Additives can make up and improve the performance of base oil and give some new properties. It is lubrication. An important part of oil.
How long can I change the oil?
In the minds of ordinary people, the engine oil is changed every 10,000 kilometers. In fact, this statement is inaccurate. To be precise, when to change the oil depends on what oil you add.
First of all, if you use mineral oil, you should change the oil within half a year or within 3000 kilometers. If you use semi-synthetic oil, you should change the oil within half a year or 5000 kilometers. The fully synthetic engine oil is the best, and it can be changed every year or 10,000 kilometers.
What do the numbers and letters on the engine oil stand for?
When you buy engine oil, you can often see the numbers and letters on it. Do you know what these two things represent?
First of all, this W, W stands for winter, but the W on the engine oil is suitable for a wide range of temperatures in winter, and it can be used in all four seasons.
The number in front of W refers to the viscosity value at different low temperatures, and this value is linked to the outside temperature. If it is 0W, it means the lowest temperature is -35℃, 5W means the lowest temperature is -30℃, 10W means the lowest temperature is -25℃, and 15W means the lowest temperature is -20℃.
The numbers after W are 20, 30, 40, 50, which represent the kinematic viscosity at 100°C and the high temperature shear viscosity at 150°C, which is high temperature protection. The larger the value, the protection of the oil at high temperature. The better the performance. This high temperature refers to the working temperature of the engine and has nothing to do with the outside temperature.
Type of oil
The types of engine oil include mineral oil, semi-synthetic engine oil, and fully synthetic engine oil.
Mineral oil is the most commonly used lubricant on the market. It is the fractional distillation of useful substances in the petroleum refining process, such as gasoline and aviation oil, and then the remaining base oil is processed and extracted. Essentially, it uses the inferior components of crude oil.
The price of mineral oil is relatively low, and its service life and lubricity are not as good as synthetic oil. At the same time, it also pollutes the environment. In addition, mineral oil cannot be completely removed during the refining process because of its high pour point. Not suitable for use under extreme conditions in low temperature areas.
Semi-synthetic motor oil is a semi-synthetic base oil that is purified by hydrocracking technology on the basis of mineral oil. It is a mixture of mineral motor oil and fully synthetic oil in a ratio of 4:6. Semi-synthetic oil The purity is very close to that of fully synthetic oil, but its cost is slightly higher than that of mineral oil. It is an ideal transition product from mineral oil to synthetic oil.
Fully synthetic motor oil is a high-grade oil in motor oil. It is ethylene and propylene dispersed from gas or natural gas in crude oil, and then refined into a lubricating fluid composed of macromolecules through complex chemical reactions such as polymerization and catalysis.
In essence, it uses the better ingredients in crude oil, chemically reacts and achieves the expected molecular form under artificial control. The fully synthetic oil molecules are arranged neatly, and the ability to resist external variables is naturally strong, so the physical fitness is good. , The ability of heat stability, anti-oxidation reaction, resistance to viscosity changes is naturally much stronger than mineral oil and semi-synthetic oil, and the price is also the highest.
How to choose oil
You see various brands of engine oil on the market, like super fully synthetic or add various terms in front of fully synthetic, here I can tell you clearly, as long as they are unified and understood as semi-synthetic. .
There are many engine oil brands in the world, and there are also some engine oil manufacturers in my country. So how do you choose the engine oil suitable for your car? Here is an introduction to the various oil brands in the world.
1. Mobil (United States), Mobil Lubricant is one of ExxonMobil's products. The company was founded in 1882 and has a history of 138 years. During this period, Mobil Lubricants has covered various fields in the world: passenger car lubricants, commercial vehicle lubricants, industrial lubricants, and seven categories of marine, aviation, basic and specialty oils.
Advantages: long-lasting, silent, durable, durable, with excellent high temperature resistance.
Disadvantages: The engine is noisy after use, and the power is insufficient at high speeds.
2. Shell (Netherlands), Royal Dutch Shell was established in 1907. The company is headquartered in The Hague, the Netherlands. It is one of the world's largest energy companies and operates in more than 70 countries and regions around the world. In the early 1890s, Shell Transportation and Trading Co., Ltd. had already begun to import kerosene into China, and established oil depots in Hong Kong, Shanghai, Guangzhou, and Xiamen. Later, it cooperated with Royal Dutch Petroleum to operate the Far East business.
Advantages: strong cleanliness, quieter performance at low and medium speeds, and better dynamic response.
Disadvantage: Short oil change interval.
3. Castrol Lubricants (UK), a sub-brand of Castrol BP, was established in 1899 and has lubricants production plants in more than 70 countries around the world, in the United Kingdom, the United States, France, Germany, and Italy , Japan, Australia and other countries have 12 technology research centers.
Advantages: good low-temperature cold start performance, strong oil film, and good cold protection performance for the engine.
Disadvantages: poor cleanliness.
4. Mote Lubricants (France), founded in 1853, is a high-end French lubricant brand. Its headquarters is located in Paris, France, and its business covers nearly 100 countries and regions around the world. It has been committed to high-quality lubricants for automobiles and motorcycles, high-performance lubricants for competitions, and the research and development, manufacturing, sales, and cooperation with high-end brands such as Brabus, BMW, and Porsche.
Advantages: strong acceleration and protection, and has excellent high temperature resistance and low temperature fluidity.
Disadvantages: the oiliness decays faster and the anti-friction is poor.
5. Flowserve Lubricants (Germany), Germany Flowserve Oil Group was founded in 1931 and is headquartered in Mannheim, Germany. As one of the world's largest independent lubricant manufacturers, Flowserve Lubricants provides engine oil, transmission oil, shock absorber oil, metal working fluid, industrial equipment oil, metal forming agent, preservative, and grease to the automotive industry. Such products entered the Chinese market as early as 1988, and it was one of the first international lubricant companies to invest and build factories in China.
Advantages: fuel saving, smooth, good durability, low noise, not easy to burn engine oil.
Disadvantages: high viscosity and poor low temperature fluidity.
6. Kunlun Lubricant (China), Kunlun Lubricant is a subordinate brand of China National Petroleum Corporation Lubricant Branch. Kunlun Lubricants is not only dedicated to automotive lubricants, but also takes care of: special oil for construction machinery, high-end motorcycle oil, top-class car oil series, high-end car oil series, environmentally friendly and energy-saving series products, high-end high-horsepower freight vehicle oil , Heavy-duty truck oil, grease, antifreeze, glass water, brake fluid and other products.
Advantages: fuel-saving, strong sealing, good quietness.
Disadvantages: poor starting dynamic response and low durability.
Summarize
Having introduced so much knowledge about engine oil, I believe that everyone has their favorite brand in their hearts, but you must remember, don’t listen to the 4S shop or repair shop asking you to add what kind of engine oil. And there is one more thing everyone should remember. After the maintenance is done, the remaining oil can be taken away. Finally, I wish you all the oil that suits your car.
