To what extent the engine oil needs to be changed, and the oil needs to be changed in what state

1. There are 3 types of general engine oil, fully synthetic, semi-synthetic, and mineral engine oil.

2. Generally, the fully synthetic engine oil is replaced once every 10,000 kilometers or 1 year.

3. Generally, semi-synthetic engine oil is changed once every 7500 kilometers or 7-8 months.

4. The general mineral engine oil is replaced once every 5000 kilometers or 6 months.

Normally, vehicle oil is generally changed once every 5,000 kilometers or half a year, and fully synthetic engine oil can be changed once every 10,000 kilometers.

The reason for the short oil change cycle in China The difference between oil and air quality is the oil making process China's oil road conditions and environmental problems, European car clubs and Chinese cars are very different.

Car oil is usually changed every six months.

1.The oil of the car needs to be changed regularly and cannot be used all the time; 2.The change interval is determined by the quality grade of the oil.

The best quality is synthetic motor oil, about 10,000 kilometers or once a year.

The second is semi-synthetic engine oil, which needs to be changed once a car is 7,500 kilometers or seven or eight months; The last one is mineral oil.

Its performance is not good, and the corresponding replacement cycle should be shortened.

The car is replaced after 5000 kilometers or half a year.

How to judge oil quality:1? Look at the oil packaging.

**The packaging of Oil 3360 is exquisite, there will be no blurred markings, and the pattern is not clear.

The cover material is delicate and smooth.

If the appearance of the oil is blurry and rough, it is most likely a fake oil.

2.Look at the oil seal.

**The early defense seal of the engine oil is made of tin foil, and the seal is neat and orderly.

If the seal is not tight, it is most likely fake oil.

3.**The oil has no taste, the color is bright and transparent, and there are no other impurities and suspended particles when poured.

Engine oil is known as the blood of the engine, and plays the role of lubrication, cleaning, sealing, heat dissipation, buffering, and rust prevention in the engine. So engine oil is very important for the engine.

Changing the engine oil is also the main job during maintenance, but many riders don't know when to change the engine oil.

Most car owners will change the oil according to the mileage driven. Some owners change the oil once every 5,000 kilometers, some owners change the oil once every 8,000 kilometers, and some owners change the oil once every 10,000 kilometers.

How many kilometers should I drive before I need to change my oil?

In fact, there is no fixed replacement cycle for engine oil. How many kilometers you drive to change oil depends on what oil you use, as well as your driving style and road conditions.

If you add a good brand of synthetic engine oil, you can change the oil every 8,000 kilometers when driving on congested city roads every day. Because Sun Naowei often has to wait for a red light to drive in the urban area, he often encounters traffic jams, and when he waits for a traffic jam at a red light, although the mileage of the car has not increased, the engine is running non-stop, so the oil can be changed in advance.

If you often drive on relatively smooth elevated roads or highways, you can change the oil every 12,000 kilometers. Because the speed of the vehicle is relatively high when driving on the highway or on the elevated road, the gearbox will be in a relatively high gear at this time, so that the engine speed will be reduced, and the highway will generally not be blocked by the stove or run a red light, so the maintenance can be postponed.

Motorists are advised to choose a big brand of synthetic motor oil when buying motor oil. Although this oil is expensive, it has better lubricating properties and a longer service life.

The oil filter element should be replaced with each oil change. When buying an oil filter, you must also choose a product from a big brand. Inferior filters are ineffective and can aggravate engine wear with long-term use.

Millions of car purchase subsidies.

First of all, the decay of oil has a certain period. Generally speaking, regular oil will begin to oxidize after about three months of exposure to the air, resulting in a decrease in function. That is, after changing the oil, if you haven't driven there for three months, you should also change the oil again at that time.

The term of synthetic oil is about six months or nine months. If you drive, the domestic Tong people often start to decay at 5,000 kilometers. Semi-synthetic is usually 7,500, and fully synthetic is usually around 10,000 kg.

The oil change cycle is as follows:1The oil must be changed every 5000 km.

How long the oil lasts depends on the quality of the oil. It is no problem to use a good amount of time for a year, and ordinary oil can be used for half a year. 2.

How long is the best time to replace depends on the usage rate of your car. The usage rate is high, and when it is more than 1,000 kilometers per month, high-grade oil is used, which can extend the time and reduce the number of maintenance trips. On the contrary, when the usage rate is low and less than 5,000 kg in half a year, low-cost oil is used.

3.It is advisable to change direction every 40000-50000 km or 3-3 years. Many auto repair shops learn from other peer service companies and learn from each other's strengths.

More standardized enterprises will also learn from the automobile maintenance requirements of foreign auto giants, combined with the current road conditions, air quality and employment technology Xiangzheng level and other factors to make more reasonable provisions. It is recommended to change the directional oil every 40,000-50,000 kg or 2-3 years to prevent the directional oil from becoming dirty or deteriorating with other consequences.

The reason for the poor oil change of the vehicle is to ensure the normal function of the engine oil and effectively protect the engine. The functions of the oil are as follows:

1.Lubrication reduces wear: The relative sliding between the piston and the cylinder of the starting machine causes wear and tear, and a thick oil film is formed between the two sliding surfaces to separate the surface of the relative sliding part and reduce wear.

2.Cooling: The oil brings heat back to the tank, which then radiates into the air to help the tank cool the engine.

3.Cleaning: The oil recycles carbide, sludge, and worn metal particles from engine parts back to the oil tank, and washes off the dirt generated on the parts through the flow of lubricating oil.

4.Shock absorption: When the engine cylinder pressure increases, the load on the piston, piston chips, connecting rod and crankshaft bearing suddenly increases, and the shock load on the bearing is buffered by load transmission and lubrication.

It's time to change the oil:1. Generally, the oil is changed every 5000 to 7500 kilometers, and the oil filter must be changed every time the oil is changed.

A premature oil change can cause unnecessary waste, while a prolonged oil change can lead to early engine wear and carbon build-up. In terms of time, whether it is mineral oil or fully synthetic engine oil, the replacement interval should not exceed one year; 2.Acceleration is slow.

When the fluidity of the engine oil decreases, the sealing function of the engine oil will deteriorate, resulting in insufficient cylinder pressure, decreased power, and slow acceleration; 3.Excessive oil impurities. If there are too many impurities in the oil, it will block the oil circuit and the oil pump, and it will be difficult to maintain the normal oil pressure, resulting in engine failure; 4.

Fuel consumption increased abnormally. When the fuel consumption increases abnormally, it may be because the viscosity of the engine oil increases, and the load on the engine becomes larger, which can be solved by changing the oil in time by disturbing the big disturbance; 5.The engine is too noisy.

When the noise of the internal running parts of the engine becomes louder, it means that the oil film may become thinner and the strength may be reduced due to the long-term non-replacement, and it needs to be replaced in time. 6.Oil grades don't match.

Using jujube with inappropriate viscosity will shorten the life of the engine. In order to ensure driving safety, it is necessary to add the appropriate grade of oil according to the specific conditions of the engine. Millions of car purchase subsidies.

Generally speaking, the oil in the crankcase is more prone to oxygen sensitive preparation and even emulsification in the high temperature and high heat environment, engine exhaust pollution, water vapor intrusion, and the oil in the crankcase. For serious oil floatation or water ingress in the oil due to damage to the cylinder gasket and engine damage, the oil should be replaced immediately once found.

If you want to change the engine oil, try to use a good engine oil, the molecular structure of the synthetic engine oil is tighter, the lubrication effect is better, the degree of deterioration is smaller, the time is longer, the oil is weakly alkaline, and the oxidation resistance is good. As a result, synthetic oils have a longer resistance to deterioration and will remain in the engine for a longer time, while mineral oils, limited by cost and the basic characteristics of mineral oils, have a lower oxidation resistance.

Mineral engine oil is specified to be replaced at 5,000 kilometers or 6 months, semi-synthetic engine oil is required to be replaced at 7,500 kilometers or 1 year, and fully synthetic engine oil is required to be replaced at 10,000 kilometers or 1 year. In fact, the oil change mileage (check the transaction price|Detailed explanation of the model) is just a reference and estimate, not that the mineral oil must be replaced when it reaches 5000km, and it must be replaced when the total synthesis reaches 10000km.