Why is a car important to motor oil? What is car oil used for, is it important?

I would like to share my experience with you.

Engine oil is also called lubricating oil, if the engine is compared to the heart of the car, then the oil is the blood of the car, and its role has the following points:

Lubrication and friction reduction: when the car starts, there is rapid relative friction between the piston and the cylinder, between the spindle and the bearing, the timing gear, etc., and one of the major functions of the engine oil is to form an oil film between the two friction surfaces through the friction of the parts, and the oil film will separate the two friction parts surfaces, so as to achieve the purpose of reducing wear.

2.Cleaning and cleaning: Another function of engine oil is to bring carbon deposits, oil sludge, metal wear particles and other dirty things on engine parts back to the oil pan through circulating flow, so as to achieve the effect of cleaning and cleaning.

3.Leak-proof: The oil can also form an oil film between the parts that are moving to improve their tightness, which is conducive to preventing air leakage or oil leakage.

4.Anti-rust and anti-corrosion: The movement of the engine oil through the parts will form an oil film on the surface of the parts, which can be adsorbed on the surface of the parts to prevent water, air and other contact with the surface of the parts and make the parts corrode and rust.

5.Cooling: The oil helps the coolant cool the engine by bringing some of the heat from the engine back to the oil tank and dissipating it into the air.

Engine oil has six major functions, namely: lubrication and friction reduction, cleaning and dispersion, cooling and cooling, sealing and leakage prevention, corrosion prevention and shock absorption and buffering.

1.Lubrication and friction reduction: A layer of oil film is formed on the surface of the two sliding parts, so that the parts will not be rubbed when running, so that the parts can run smoothly.

2.Clean and disperse: Good engine oil can wash the dirt on the surface of the parts through the flow of oil, adsorb some tiny metal debris in the engine, and then scrape off the oil pan by the piston oil ring.

3.Cooling and cooling: When the engine is running, high temperature is generated, and when the oil reaches the running part, it will absorb the heat, and then take the heat away to assist the parts to dissipate heat.

4.Leak-proof sealing: It refers to the formation of a sealing ring between the piston ring and the piston by means of oil film to prevent the exhaust gas from entering the crankcase after combustion.

5.Anti-rust and anti-corrosion, good engine oil can adhere to the surface of parts to prevent air, acidic substances and harmful gases from contact with parts, so that the parts are not corrupted by atmosphere and water, and protect the engine.

6.Shock absorption and buffering: When the pressure of the engine cylinder port becomes larger, suddenly the load on the piston, piston ring, connecting rod and crankshaft bearing is very large, and this load is transmitted and lubricated by the bearing, so that the shock load bears plays a role in buffering.

The five main functions of motor oil:

1. Alleviate friction and high temperature: the oil film of sufficient thickness separates the surface of the relatively sliding parts, so as to achieve the purpose of reducing wear.

2. Sealing effect: The engine oil can form a sealing ring between the piston ring and the piston to reduce gas leakage and prevent external pollutants from entering.

3. Anti-rust effect: lubricating oil can absorb on the surface of parts to prevent contact between water, air, acidic substances and harmful gases and parts.

4. Buffering effect: when the pressure of the engine cylinder port rises sharply, the load on the piston, piston chips, connecting rod and crankshaft bearing is suddenly aggravated, and the load is transmitted and lubricated by the bearing, so that the impact load bears plays a buffering role.

5. Cleaning effect: good engine oil can bring carbide, sludge and wear metal particles on the engine parts back to the oil tank through circulation, and wash out the dirt generated on the working surface of the parts through the flow of lubricating oil.

The normal operation of the engine needs to be lubricated with oil, otherwise the engine will be damaged immediately due to dry grinding. This is the main function of motor oil to keep it well'Lubrication.

The role of engine oil is lubrication, cooling, noise reduction, sealing, corrosion, etc., and the oil is also known as the blood of the engine which is quite important.

Take "5w-40" as an example, look at the label of engine oil, mainly look at two numbers, the first is the main label, which is the "5w".

1. Where W stands for Winter is the meaning of winter, which is divided into 0W, 5W, 10W, 15W, 20W, 25W;

2. The higher the value in front of W, the better the low-temperature fluidity of the oil, the lower the ambient temperature that can be used, and the better the protection ability of the engine in the low-temperature environment, 5W is the minimum temperature -30. Therefore, in extremely cold areas, the worst must be 5w, otherwise the oil will freeze in winter.

Good engine oil has a lot of benefits for the car, it can reduce engine wear, and it has better cooling, it can also reduce the noise of the engine, and it has better lubrication and rust prevention. The quality of engine oil still has a great impact on the car, but good engine oil is also more expensive.

Now the engine oil used on the market is generally the oil of the four seasons, and its oxidation is very little affected by temperature, especially the fully synthetic engine oil, as long as the normal mileage and time are used, the lubrication performance will not be affected, which can effectively protect the engine, so the models recommended by the use of oil manufacturers can fully meet the daily use of the four seasons.

Base oils. The performance of fully synthetic oil determines the cleanliness, oxidation resistance and high temperature resistance of fully synthetic oil, which is higher than that of general mineral oil.

Replacement mileage is longer. Much less sludge is formed than regular motor oil. The evaporation resistance and high temperature shear coefficient are superior to those of ordinary oils.

Because the viscosity of the engine oil is too high, the force required to agitate the components in the engine will be greater, the engine efficiency will be reduced, and the fuel consumption will be increased accordingly; If the viscosity is too low, although the fluidity is good, it will cause the hot car oil to be too thin, which can easily cause oil leakage or burn oil.

Some high-grade multi-grade lubricating oils have good viscosity, gentle temperature curve change, and fluid viscosity changes little with temperature, which can give full play to the performance of starter motors.

There is no good or bad thing about 30 oil and 40 oil. The oil is all about its suitability. From the perspective of oil products with different viscosities, the viscosity of No. 40 oil is higher than that of No. 30 oil, which means that at high temperatures, its protective performance is better and the sealing is stronger, but the fluidity is poor.

Choosing the right engine oil for your car is king. Because the lubricant is composed of 80% base oil and 20% additives, and additives are the finishing touch of high-grade lubricants, which can increase the performance of lubricating oil, help the engine reduce friction, anti-oxidation and anti-corrosion, anti-emulsion, and clean carbon deposits.

etc., to meet higher use requirements. No matter what the brand is, as long as it can give new life to the old car that is old; Let fuel consumption become a fuel-efficient little prodigy; Make weak power more efficient and durable, even with good oil.

1. As a lubricating oil: it can reduce the friction and damage when the parts move with each other, such as reducing the friction between the cylinder liner and the piston ring, or the camshaft. 2. As a coolant:

It absorbs the heat generated in the combustion chamber and piston roof of the engine, cools the engine and protects it from overheating.

In the process of driving a motor vehicle, if you use a good engine oil, it will play a more positive role in the performance of the motor vehicle.

It can reduce the wear and tear of the engine, improve the sealing and cooling effect of the car, reduce the noise of the engine, and make the oil and gasoline burn more fully.

You can make your car last longer, you can also get a particularly good maintenance, and it will also make you free from any noise when driving.

<> "The Importance of Motor Oil for Vehicles.

The three major parts of the car are the engine, gearbox and chassis, the engine is an important component of the vehicle to maintain normal operation, the engine oil is equivalent to the heart and blood for the engine, the oil in the engine mainly plays the role of lubrication, cleaning, sealing, buffering, rust prevention and cooling, so the engine to maintain a good working condition plays a decisive role in the pure loss. The oil used in our vehicles is divided by the label, simply put, the difference between oil viscosity and fluidity, the viscosity of the oil will also have a slight impact on the fuel consumption, if the viscosity is high, the running resistance of the parts is large, and the fuel consumption will increase accordingly, but the oil that meets the requirements of the manufacturer should be combined with the old and new age of the car to choose the oil that meets their engine standards.

Therefore, when our car engine is left standing for a period of time, the oil inside the engine will completely flow into the oil pan, and there is no oil adhesion on the surface of each part of the engine.

Choose multi-grade oil, multi-grade oil has a better protection effect on the engine due to saving, long life and high efficiency. Based on the characteristics of multi-grade oil, premature blackening and oil pressure may be smaller than that of ordinary oil during use, which is normal. The right fit is the best.

1. Shell 2, Mobil 3, Castrol 4, Jiamei 5, Zhongneng Hi-Tech 6, Total 7, Coside 8, FOSS 9, Kunlun 10, Great Wall. The role of oil is 1. Lubrication and wear reduction: between the piston and the cylinder, between the spindle and the bearing, there is a rapid relative sliding, and to prevent the parts from wearing too quickly, it is necessary to establish an oil film between the two sliding surfaces.

An oil film of sufficient thickness separates the surface of the relatively sliding part to reduce wear.

2. Cooling and cooling: The oil can bring the heat back to the oil tank and then dissipate it into the air to help the water tank cool the engine. 3. Cleaning and cleaning:

Good engine oil can bring carbide, sludge and wear metal particles on the engine parts back to the oil tank through circulation, and wash the dirt generated on the working surface of the parts through the flow of lubricating oil. 4. Sealing and leak-proof: The oil can form a sealing ring between the piston ring and the piston to reduce gas leakage and prevent external pollutants from entering.

5. Anti-rust and anti-corrosion: lubricating oil can be absorbed on the surface of parts to prevent water, air, acidic substances and harmful gases from contacting parts. 6. Shock absorption and buffering

When the pressure of the engine cylinder port rises sharply, the load on the piston, piston chips, connecting rod and crankshaft bearing is suddenly aggravated, and this load is transmitted and lubricated by the bearing, so that the shock load is cushioned.

Of course, it is very important to lubricate, clean, seal, reduce noise and cool the engine.

The engine is the heart of the car, and the oil is the nutrient solution of the engine!

<> "The Importance of Automotive Oil Selection.

How to choose a closed core grade with viscosity?

1.Look at the age of the car. With the growth of the age of the car, it is necessary to choose a slightly larger viscosity oil, because the wear of the older car engine will be more serious, choose a relatively higher viscosity of the oil 5w-40, new cars usually choose a slightly lower viscosity oil, then add 5w-30, and Japanese and Korean cars can use 0w20.

2.Look at the car series. German cars, usually using turbocharging technology, the gap will be relatively large, and it will be relatively better to choose 5w-40 for wild digging.

American cars, the engine is more precise, the gap between parts is smaller, and it is more suitable to use 5w-30 oil. Japanese and Korean cars tend to use more viscous oils.

3.Look at the season. Depending on the season, so does the choice of oil. Within a reasonable range specified in the driving manual, choose an oil with better fluidity in winter and an oil with higher viscosity in summer. However, it can be used in some areas.

4.Look at the environment of the car. In areas with poor road conditions, the oil change cycle should be shortened, there are more vehicles in urban areas, and frequent starts and stops are often made, so it is recommended that the viscosity be lower, and if you are often running long-distance high-speed and the like, it is recommended to use SN5W-40.

Good engine oil can do a lot for a car. Here are a few examples:

1.Lubrication: Good oil can form a lubricating film inside the engine, reducing friction between metal parts and thus reducing wear damage.

2.Cooling: The parts of the engine will heat up when working, and good oil can take away the heat from the dismantling part and maintain the normal working temperature of the engine.

3.Clean: Good oil can take away dirt and impurities and keep the inside of the engine clean. At the same time, it prevents dirt and deposits from forming on the components.

4.Protection: A good oil can protect the internal parts of the engine from corrosion and oxidation, thus extending the life of the car.

In conclusion, good engine oil can protect and extend the life of the car, reducing the number and cost of repairing and replacing parts. Therefore, regular changes and use of high-quality oil are essential for the healthy operation of the car.

Speaking of what are the brands of racing engine oil, because this is a topic that many racing drivers have been paying attention to, the good and bad buried engine oil plays a good role in protecting the sending function of the car, and the inferior engine oil not only can not be the engine, but also may cause injury and damage to the engine, so it is necessary to choose a good engine oil, so this is also the reason why most people choose to break through the lubricating oil, this has a particularly good protective effect on the engine, and it is a race against time on the racing track. Therefore, racing players will never be sloppy in their choice of lubricants.

Myth 1: If the oil turns black, you have to change it.

Blackened oil doesn't mean it's spoiled, and the quality of the brand** oil on the market is quite high, and it can maintain lubrication at high temperatures.

Generally speaking, when new oil is added, sediments such as sludge and carbon deposits on the parts are dispersed in the oil, which will cause the oil to turn black after a certain period of time. An experienced master will determine whether the oil needs to be replaced by the viscosity of the oil, rather than observing the color of the oil turning black and concluding that it needs to be replaced.

Myth 2: You have to change the engine oil every 5000 kilometers.

In the daily maintenance process, the maintenance interval of the general vehicle is 3 months or 5000 km, and some German cars are 6 months or 10000 km. Many car owners will implement which standard comes first, but this is not the case.

Myth 3: It is better to add more oil than to add less.

The amount of oil should be controlled between the upper and lower scale marks of the dipstick. Because there is too much oil, it will enter the combustion chamber from the gap between the cylinder and the piston, and burn to form carbon deposits. These deposits increase the engine's compression ratio, increasing the chance of knocking.

Secondly, too much oil increases the stirring resistance of the crankshaft connecting rod, which increases fuel consumption.

In addition, adding too much oil will increase the pressure inside the engine, which will easily lead to oil leakage in the engine seal.