Difference Between Car Oil What is the difference between car special engine oil and regular engine

The number in front of the w represents the low-temperature performance.

The lower the number. The lower the freezing point.

The more suitable it is for use in low temperature environments.

The numbers at the back represent high-temperature performance.

The higher the number. The more resistant to high temperatures.

5w-3010w-30

10w-40

15w-40

Several types of oils are suitable for different temperature environments.

It cannot be used as a basis for distinguishing between good and bad quality.

But multi-grade oil.

Such as 5w-45

Excellent low-temperature and high-temperature performance.

It's called good engine oil.

The lower the letters, the better the quality.

The higher the number in front of the 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.

The number after w is an indicator of the high temperature resistance of the oil.

So you can subtract the numbers before and after ... The higher the number, the better.

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From Autohome.

What is the difference between car oil labeling?

Automobile oil sorting skills.

1. It has a protective effect: the special engine oil for automobiles refers to the engine oil produced for a certain brand, which has a special protective effect on the engine, while the ordinary engine oil refers to the engine oil without difference, which is universal.

2. Higher performance: The engine oil manufacturer will re-develop (blend) the engine oil according to the requirements of the engine of the automobile manufacturer itself, such as adding different additives on the basis of the performance of the original organic oil, so that the oil can have good high temperature resistance, low temperature fluidity, anti-corrosion and other characteristics.

3. Different raw materials for refining: ordinary engine oil is mineral oil, which is a lubricating oil extracted from petroleum, and the base oil of mineral oil is the product of refining the remaining bottom oil left after the fractionation of useful light substances (such as aviation oil, gasoline, etc.) in the refining process. The special oil is ethylene and propylene dispersed from gas or natural gas in the first place, and then refined into a lubricating liquid composed of macromolecules through complex chemical reactions such as polymerization and catalysis.

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.

There are two kinds of oil viscosity: low temperature viscosity and high temperature viscosity, in our common 5w-30 oil viscosity, 5w represents low temperature viscosity, the smaller the number in front of w, the better the low temperature fluidity of the engine oil, 5w can cope with the low temperature environment above -30 degrees, 0w can be pressurized performance machine is generally recommended to use 30 viscosity engine oil, this level is suitable for most models; Cars with poor manufacturing processes or excessive mileage that begin to experience oil loss are suitable for oils with a viscosity of +10. For example, it is recommended to use 0W-20 engine oil for the original car, and synthetic engine oil is also used more and more for the engine through vehicles. A fully synthetic motor oil means that all the ingredients are synthetic.

Fully synthetic motor oils have excellent cooling capacity, tightness, oxidation resistance and fluidity, so turbocharged ones are recommended.

The load of the car engine used in this field or mountainous area is generally relatively high, and the engine runs at high speed for a long time to obtain higher power off-road, so in this case, we need to use engine oil with better heat dissipation performance to help the viscosity of the engine oil is divided into high temperature viscosity grade and low temperature viscosity grade. The grade with w at the end is a low temperature viscosity grade. W stands for winter (winter), the more the number in front of it, the better the low temperature fluidity of the engine oil, the lower the ambient temperature available for use, the higher the cold viscosity, and the thick oil film, so that the internal parts of the engine are better sealed, and the friction surface has a good protection effect.

But if your car itself needs to use 20 viscosity, but add a high viscosity, it will cause the power of the car to decrease.

Fully synthetic engine oil is generally SN level, although SN level full synthetic engine oil is more expensive, but due to good anti-attenuation ability, long service life, excellent cleaning ability, less replacement times, saving labor costs, in general, fully synthetic engine oil and mineral engine oil use based on the characteristics of the above oil, so generally add different engine oil, the replacement cycle will be different, such as ordinary mineral oil, the recommended replacement cycle is 5000 kilometers or half a year, The recommended replacement interval for semi-synthetic oil is 7500 km or about 8 months.

1. Ordinary mineral oil; 2. Semi-synthetic engine oil; 3. Fully synthetic engine oil.

The use of engine oil depends on the situation of the car to distribute, if your car is a weathered old car, then you need to buy a more expensive oil to maintain the car, maintain your car, but if your car is just arrived is more than a new car, then there is no need to buy the best kind of engine oil that is expensive, you just need to buy ordinary, the general kind of gasoline is completely fine, because yours is a new car, he is still in a run-in period, There is no need to use such a good engine oil during the run-in period, then this will only make your cost performance drop sharply.

In general, there are two kinds of engine oils with 92 and 95, these two types of engine oil are still suitable for different vehicles, so you must choose according to your own vehicle when choosing, if you choose improperly, it will also be very damaging to the car.

Motor oils are divided into mineral oils, semi-synthetic oils, and fully synthetic oils. Most people are still familiar with and know how to distinguish between the two. Mineral engine oil, as the name suggests, is a motor oil extracted from minerals, which is relatively viscous and used a lot in the past, but is now gradually replaced by synthetic motor oil.

Synthetic motor oil, on the other hand, is a chemical combination of motor oil. The performance of fully synthetic engine oil is the best, if the vehicle is an engine with T, it is recommended to use full synthetic engine oil, which has good smoothness and cleanliness, and the replacement cycle is relatively long, which can reach 1 year or 10,000 kilometers. Semi-synthetic oil, that is, a mixture of synthetic oil and mineral oil, the performance is in between, ** and the replacement interval is also in the middle, for ordinary self-priming engines, semi-synthetic oil can be used.

1. The role is differentEngine oil can lubricate, clean, cool, seal, reduce wear and other functions of the engine; Gasoline is used as a fuel, and by mixing with air and combusting, it works externally to make the engine output power to the outside (driving the car).

2. The location is differentThe oil has a high ignition point and is located at the front of the car near the engine; Gasoline has a low ignition point, is far from the engine, and is located at the bottom of the middle side of the car.

3. The definitions are differentEngine oil is the lubricant used in the engine and consists of base oil and additives; Gasoline is a volatile and flammable hydrocarbon mixture liquid that is fractionated, cracked or cracked from petroleum.

If the driving environment is better, the average speed is higher, and the driving habits are gentle, then the maintenance time and mileage can be appropriately extended; On the contrary, if the road is congested and you often drive violently, then appropriately reduce the maintenance time and mileage of the hall.

1.Engine oil, that is, engine lubricating oil, can lubricate and reduce friction, assist cooling and cooling, seal leakage, rust and corrosion, shock absorption and cushioning for the engine. It is known as the "blood" of automobiles.

2.Engine oil is made up of two parts: base oil and additives. Base oil is the main component of lubricating oil, which determines the basic properties of lubricating oil, and additives can make up for and improve the shortcomings of base oil performance, give some new properties, and are an important part of lubricating oil.

3.The 5W W-30 and so on in the engine oil indicate the viscosity grade of the engine oil, which is the SAE grade. "W" means winter.

The smaller the number in front of w, the smaller its low temperature viscosity, the better the low temperature fluidity, and the lower the applicable minimum temperature. The number after w does refer to the viscosity of the oil at 100 degrees Celsius, and the higher the number, the more viscous the oil. The following figures mainly refer to the index of the high temperature resistance of the oil, and the better the protection performance at high temperatures.

4.Fully synthetic engine oil: Fully synthetic engine oil has better high and low temperature performance, longer oil change interval and is suitable for more severe car conditions, suitable for luxury high-performance vehicles, and is replaced at about 10,000-12,000 kilometers.

5.Semi-synthetic engine oil: The replacement cycle of semi-synthetic engine oil is generally about 8000-10000 kilometers, and the performance is moderate.

6.Mineral oil: This type of oil generally needs to be replaced after about 5000 kilometers.

Engine oil and lubricating oil are mainly different in the working range, that is, different uses. Engine oil is also a type of lubricating oil, but lubricating oil does not replace engine oil, it can be called engine lubricant. It is versatile and can be divided into several models, including summer oil, winter oil, semi-synthetic oil, and fully synthetic oil.

Replace the engine with semi-synthetic oil of about 5000 km. The engine will be changed every 10,000 km in synthetic oil.

The difference between motor oil and lubricating oil is:

1.Engine oil is a kind of lubricating oil, which is a lubricant for various zero-based coarse parts of machinery;

2.Lubricating oil is a liquid or semi-solid lubricant used in various automotive machinery and equipment to reduce friction and protect mechanical parts, and plays the role of lubrication, cooling and rust prevention. By using lubricating oil, friction can be reduced between two objects in relative motion;

3.Lubricants usually consist of base oils and additives. Base oils are the main components of lubricants and are divided into three categories: mineral base oils, synthetic base oils and biological base oils.

Mineral base oils are used in a wide range of applications and determine the basic properties of lubricants. Additives make up for the lack of base oil properties, make the lubricant have richer properties, and are also an important part of the lubricating oil.

Millions of car purchase subsidies.

Engine oil and lubricating oil are mainly different in the working range, that is, they are used for different purposes. Engine oil is also a type of lubricating oil, but lubricating oil does not mean that it is engine oil, engine oil can be called engine lubricant. It is widely used, and it is divided into a variety of models, including summer oil, winter oil, semi-synthetic engine oil, and fully synthetic engine oil.

The engine is changed about once every 5,000 km using semi-synthetic oil. The engine is changed approximately every 10,000 kilometers using fully synthetic oil.

The difference between motor oil and lubricating oil is:

1. Engine oil is a type of lubricating oil, and lubricating oil is a lubricant for various mechanical parts;

2. Lubricating oil is a liquid or semi-solid lubricant used to reduce friction and protect mechanical parts on various automotive machinery and equipment to lubricate, cool and prevent rust, and the use of lubricating oil can reduce friction between two relatively moving objects;

3. Lubricating oil is usually composed of two parts: base oil and additives, base oil is the main component of lubricating oil, which can be divided into three categories: mineral base oil, synthetic base oil and biological base oil, mineral base oil is widely used, which determines the basic properties of lubricating oil, and additives make up for the lack of base oil performance, so that lubricating oil has richer performance and is also an important part of lubricating oil. (Photo by Li Linwei) @2019