How to evaluate the quality of a lubricant? Is the brand important? Or is it true quality?

The quality of a lubricating oil can be judged by its cost performance, and it must be good if the cost performance is high. Sometimes the level of cost performance cannot be measured by the brand, but only by the evaluation of it after people use it, so in my opinion, the real quality is important. With the development of the times, people's awareness has improved, and the judgment of good and bad things has also changed, so many brands are slowly eliminated and not accepted due to poor management.

How so? The quality of lubricating oil does not necessarily depend on the brand, I tell the truth, big brands will have a lot of inferior products because of the brand effect, small brands need to survive under these "big trees", they can only develop desperately, the quality of oil products may not be as good as others, but this may be the limit of people, an attitude problem, so when used, it still needs to be actually analyzed.

The quality of engine oil is determined by base oils and additives, and base oils are divided into mineral oils and synthetic oils. Mineral oil has color, and mineral oil is relatively turbid, the higher the grade, the more transparent, and the 3 base oils are pure colorless and transparent. Gold Engine Lubricants are made from a full range of synthetic base oils, which are colorless, clear and translucent.

The engine oil market is chaotic, and it is best to be a regular merchant Brand is important and quality is more important.

It is best to change the engine oil in 4s, trust the quality of big-name manufacturers, and don't be greedy for cheap, the engine is damaged and lost.

Hello. The quality of automotive lubricants is very important for automobiles, so let's introduce the impact of the quality of automotive lubricants on automobile engines. First of all, if the quality of the automobile lubricating oil is not good, it will cause the bearing to burn, if the quality of the lubricating oil selected is not good, or the viscosity of the lubricating oil is not right, the lubrication effect is not good.

Low oil pressure, lack of oil in the engine, and failure of the cooling system can cause the engine to overheat. In this case, high-speed operation, it is easy to burn out the bearing, commonly known as "burning tile". In addition, if an inferior oil filter is used or the oil filter is not replaced on time, impurities can be trapped in it, resulting in "tile burning".

In addition, the occurrence of snap rings may be due to the quality of the engine oil. If the lubricating oil is not clean and dispersed, carbon deposits will be generated around the piston ring after long-term use, and when the carbon deposit is serious, it can cause the piston ring to jam or break. Usually the quality of the oil is not good, it will also cause excessive oil consumption, if the anti-wear performance of the lubricating oil is not good, it will aggravate the wear between the piston ring and the cylinder, and the oil scraping effect of the oil ring will be weakened, so that the oil will enter the combustion chamber to participate in the combustion, resulting in the phenomenon of blue smoke from the exhaust pipe.

If the engine is not well sealed, the valve oil ring fails, etc., it will also cause oil leakage, which will also accelerate the consumption of oil. In addition, it may be that the oil lamp alarm is not only because the oil has run out, but also because the oil quality is not good. Once this phenomenon occurs, the main reasons are found in the following aspects:

Insufficient lubricating oil (added); Damaged oil plug (replacement); Oil pump filter clogged (cleaning); Insufficient viscosity of the lubricating oil (change the lubricating oil or check for fuel dilution and engine overheating); The oil pressure limiting valve spring fails (cleaned and replaced).

The car is of inferior quality for a long time.

To lubricate the oil will make the steam self.

If the carbon deposition is serious, it can cause the piston ring to get stuck or break the DAO, which directly affects the vehicle.

If the lubrication effect of the lubricating oil is not good. It can also cause problems such as low oil pressure, lack of oil in the engine, and failure of the cooling system.

In short, long-term use of inferior lubricating oil is a bad habit, the landlord thinks, lubricating oil is equivalent to the blood of the car, if the blood is not good, sooner or later it will be a serious illness, it is recommended to go to the car repair shop to check the car carbon deposit. ——From Che Ant.com.

Inferior lubricating oil will bring greater friction damage to the car, but also reduce the service life and fuel consumption of the car, the quality of the lubricating oil will not, on the contrary, the effect of maintaining the car is better, now I use the GS lubricating oil is not bad, I feel good after a few months.

1. Burn bearings.

If the quality of the automobile lubricating oil is not good, it will cause the bearing to burn, and the oil pressure is too low, the engine is short of oil, and the cooling system is faulty, which can cause the engine to overheat. In this case, high-speed operation, it is easy to burn out the bearing, commonly known as "burning tile".

2. a snap ring. If the lubricating oil is not clean and dispersed, carbon deposits will be generated around the piston ring after long-term use, and when the carbon deposit is serious, it can cause the piston ring to jam or break.

3. Excessive oil consumption.

There is a lot of resistance to the crankshaft that rotates at high speed, including the ejector rod that connects the crankshaft, which reduces the power and increases the fuel consumption of the vehicle while driving. At the same time, it also increases the amount of lubricating oil splashed into the inner wall of the cylinder when the crankshaft and connecting rod rotate, that is, the amount of lubricating oil entering the combustion chamber is greatly increased, the carbon deposit in the combustion chamber increases, the piston movement resistance is increased, the engine power decreases, and the fuel consumption is also increased.

4. It cannot play the role of lubrication.

At high and low temperatures, the viscosity of inferior engine oil varies greatly, or the viscosity is too thick, and it cannot be pumped between the friction parts of the engine at all, resulting in actual dry friction; Either the viscosity is too thin, like water, and it does not play a lubricating role at all. At the same time, low-quality engine oil is highly susceptible to oxidation and deterioration at high temperatures, losing its function.

6. Increase fuel consumption and block the oil road.

Inferior engine oil not only cannot clean away the dust inhaled into the air and the carbon deposits formed after combustion when the engine is working, but the combination of gum and other impurities formed by self-oxidation will lead to the formation of more carbon deposits. These carbon deposits are deposited in the piston, which affects the outward elastic tension of the piston ring, causing the cylinder pressure to deteriorate. If it is deposited in the engine, it will cause poor lubrication, aggravated wear, increased fuel consumption, decreased power, and other consequences.

7. It is six times more acidic.

During the operation of the engine, every liter of gasoline burned, a liter of water will be produced, and the water that cannot be eliminated and evaporated and the sulfur in the oil react chemically in the high temperature environment to form sulfuric acid, especially before the warm-up, its acidity is six times higher than usual, and the harm to the engine is very serious, and the acid corrosion is more serious than the wear caused by the cold start dry friction of the engine.

The engine is the heart of the car, qualified lubricating oil can reduce the wear of engine parts, the quality of the lubricating oil will directly affect the working state of the engine. In order to maintain our car, we must go to a regular auto parts factory or 4S shop, and do not be greedy for cheap to buy irregular lubricating oil, which will cause unnecessary losses to the owner of the car.

The poor quality of automobile engine oil may lead to a decrease in power, an increase in fuel consumption, and damage to the three-way catalysis. The lubricating oil in the engine crankcase has a lubricating effect on the crankshaft, but at the same time of lubrication, it will also produce great resistance to the crankshaft rotating at high speed, so there will be an optimal oil level height for the engine, at this height, that is, the crankshaft can be fully lubricated and will not produce too much resistance to the rotation of the crankshaft, this height should be the middle line of the dipstick scale. Of course, within a certain range above and below the center line, the impact will not be very large, so there is also an upper and lower limit of the lubricating oil level height - that is, the upper and lower limits of the oil scale.

When the height of the lubricating oil level exceeds the upper line (that is, when the oil is added), the disadvantages are roughly as follows: 1. The high-speed rotating crankshaft (including the part of the ejector rod connecting the crankshaft) produces great resistance, so that the power decreases, and the fuel consumption increases when the vehicle is driving. 2. Increase the amount of lubricating oil splashed into the inner wall of the cylinder when the crankshaft and connecting rod rotate, that is, the amount of lubricating oil entering the combustion chamber is greatly increased, the carbon deposit in the combustion chamber increases, the piston movement resistance is increased, the engine power decreases, and the fuel consumption is also increased.

3. Due to the increase in the amount of oil entering the combustion chamber, the exhaust emission will deteriorate, and the three-way catalytic converter may be poisoned and damaged in serious cases. The above analysis shows that the harm after adding more lubricating oil is still relatively large, and all riders are reminded to be cautious when adding lubricating oil, and do not add too much.

The poor quality of automobile engine oil may lead to a decrease in power, an increase in fuel consumption, an increase in engine wear, and damage to the three-way catalysis.

The main brands are:1

Mobil Standard Oil of New York, one of the successors of Standard Oil, was renamed Mobil in 199....

Shell Royal Dutch Shell was founded in 1907 as a London sales company that dates back to the 19th century.

Castrol Castrol is recognised worldwide as a lubricant specialist. Castrol has lubricant production plants in more than 70 countries around the world, in the UK and the US.

Total Total is one of the world's four largest petrochemical companies, headquartered in Paris, France, and more than one of the world's largest petrochemical companies.

Cepsa Cepsa is the largest oil company in Spain, the number one leading brand of lubricants, and one of the largest in Europe.

1. Select according to the working conditions of the equipment.

1. If the load is large, choose the oil with high viscosity, oiliness or good extreme pressure bonding; If the load is small, choose an oil with low viscosity; When the impact is large, the oil with high viscosity and good pressure should also be selected.

2. Low viscosity oil is selected for high movement speed, and oil with higher viscosity can be selected for low-speed parts, but for oil products with anti-wear additives, high viscosity does not need to be overemphasized.

3. The temperature temperature is divided into ambient temperature and working temperature. If the ambient temperature is low, the viscosity and freezing point (or pour point) of the lubricating oil are low, and the opposite can be higher; If the working temperature is high, choose a lubricating oil with high viscosity, high flash point and good oxidation stability, and even choose a solid lubricant; If the temperature range is large, it is necessary to choose a lubricating oil with good viscosity and temperature characteristics (high viscosity index).

4. For the working conditions of environmental humidity and wet environment in contact with water and more contact with water, lubricating oil with strong demulsibility, oiliness and rust resistance should be selected.

The oil products recommended in the equipment manual can be used as the main reference for oil selection, but it should be noted that with the progress of technology, inferior oil products will be gradually eliminated, and it is economically cost-effective to reasonably choose high-quality oil products. Therefore, even if it is an old equipment, it should not continue to use the obsolete inferior oil; The lubricating oil used in imported and advanced equipment should be based on domestic production.

Breakthrough lubricating oil quality is guaranteed! Breakthrough Lubricants and Uni-President Lubricants both belong to the companies of Huo's Group.

1. Shell. Brand introduction:"Shell"Originally a trademark of kerosene shipped by Marcus Samuel and Company to the Far East. Shell started out in the antique, antique and oriental shell business.

In 1897 Samuel founded Shell Transport & **. When Royal Dutch Petroleum and Shell Transport & ** merged in 1907, the latter's brand name and logo (Shell and Shell) became the concise name and logo of the newly formed Royal Dutch Shell Group. It has remained so ever since.

At present, Shell is one of the top 10 lubricant brands in China, and it is also a global energy and chemical group.

2. Mobil. Brand introduction: ExxonMobil is a world-renowned oil and gas company, its history began in 1882 John Rockefeller founded Standard Oil Company, has spanned more than 130 years.

As early as 1892, ExxonMobil's predecessor, Standard Oil, came to China, set up an office in Shanghai to sell kerosene, and launched the "Mobil lamp" to bring light to countless Chinese families.

ExxonMobil is a refiner and producer of lubricant base oils, as well as a seller of refined lubricants, and in 1974, ExxonMobil launched Mobil 1, a fully synthetic automotive lubricant, in the world. For more than 40 years, the Mobil brand of lubricants has been used by consumers for their superior performance and continuous technological innovation.

3. Great Wall lubricating oil.

Brand introduction: Great Wall lubricating oil is a famous trademark in Beijing, and is also a participant in the formulation of synthetic brake fluid industry standards, not only one of the top ten lubricant brands in China, but also a world-renowned lubricant production and marketing group.

Great Wall Lubricants has a world-class automatic blending and packaging production line, which can produce more than 2,000 kinds of products in 21 categories, such as internal combustion engine lubricants, industrial gear oils, hydraulic oils, etc., realizing the all-round system coverage of sea, land and air, and is a close participant and supporter of high-end fields such as manned aviation, aerospace, ocean transportation, high-speed railway, national defense and military industry.

4. Kunlun. Brand introduction: Kunlun and China's top ten lubricant brands ranked third Great Wall lubricating oil belong to Sinopec's sub-brand, because PetroChina is China's earliest production of lubricating oil enterprises, with a strong supply guarantee capacity, subordinate production plants with complete processing methods, advanced testing methods, with world-class blending technology and perfect testing methods.

Kunlun lubricating oil adds oil-soluble cleaning and dispersing agent to the formulation, so that the sand and sludge in the lubricating oil are removed or turned into a harmless suspension.

5. Zhongneng Hi-Tech.

Zhongneng Hi-Tech has set up more than 6,000 square meters of professional R&D and investment headquarters, Zhongneng lubricating oil adopts the company's unique nano-titanium fluid synthesis technology to provide long-lasting lubrication, extend the oil change interval, and has the properties of enhanced anti-wear, ultra-anti-corrosion, reduced energy consumption, clean and dispersed, energy saving and noise reduction, and provides high-quality product series according to the needs of different customers.