Analysis of precautions for vehicle oil replacement

Automobile oil is the blood that sustains the life of the engine. It is a component that can cool and lubricate the engine. Now, more and more car owners realize the importance of engine oil, but they know little about the correct use of engine oil.

1. When to change the oil

It is often said that the car should be changed oil regularly. But how often is it to be converted regularly? Basically, it is clearly written in the manual of every car. In the past, the standard was every 5,000 kilometers, but in recent years, automakers have continued to develop and research, hoping to improve the structure of the engine and extend the time required for regular maintenance and oil changes. Therefore, under normal driving conditions for many new cars, if synthetic oil is used, the oil can basically be changed every 10,000 kilometers, and some can even be towed for 20,000 kilometers. Auto maintenance professionals believe that “general driving” refers to frequently driving on the highway, rarely stopping and going. But if you often drive in the city, there are traffic lights everywhere you go, traffic jams at every turn, and most of the distance each trip is less than ten kilometers, this kind of driving method is “dissipative driving.”

In the case of “weary driving”, engine wear is relatively large, and the requirement for engine oil is relatively high. Therefore, it is recommended to shorten the interval between oil changes in order to effectively protect the engine.

Tips: Usually, it is difficult for us to determine whether the engine oil should be changed by naked eyes or touch. However, after long-term use, the engine oil will accumulate a large amount of impurities. If the new oil is not replaced in time, these impurities will wear the engine for a long time and shorten the car. Life.

2. How to choose oil when purchasing

Choosing a good oil can make the car more durable and more dynamic. A good engine oil, especially a fully synthetic engine oil, can not only protect the engine and reduce the number of oil changes, but also save gasoline costs. Therefore, its price is twice as expensive as ordinary oil, and it is the best choice for many car owners.

Pay attention to four elements when buying engine oil

Under normal circumstances, the following four elements should be paid attention to when choosing car oil:

A. The choice of oil should be selected according to the requirements of the engine. It is not necessary to use too high-grade oil on engines with lower requirements, and it is not necessary to use lower-grade oil on engines with higher requirements.

B. Multi-grade oil should be selected as far as possible. Multi-grade oil has better protection for the engine due to its saving, long life and high efficiency. Based on the characteristics of multi-grade oil, there may be premature blackening during use and the oil pressure is lower than ordinary oil, which are all normal.

C. Some domestically made brand-name engine oils are of very good quality, and the price is much lower than that of imported similar products, so you can use them with confidence, and there is no need to blindly pursue “foreign oil”.

D. If the engine is in good condition and the seasonal temperature is low, oil with a lower viscosity should be used as much as possible to make the oil path unblocked. For example, in high-temperature seasons or under severe engine wear conditions, choosing high-viscosity oil will help to form an oil film and reduce engine wear.

Tip: There are hundreds of engine oil brands on the market. Choose a better grade oil, although it is a bit more expensive, but it will protect the engine parts better.

3, the oil volume should be slightly lower than the scale on the oil dipstick

Everyone knows that engine oil is extremely important to the movement of the engine, because it is responsible for the two functions of lubrication and heat dissipation. Therefore, at any time, for the engine, there must be no shortage of oil. However, excessive addition (exceeding the upper limit of the scale) has very bad consequences. Too much oil will increase the rotational resistance of the crankshaft and reduce the output power of the engine, and the excessive oil will enter the combustion chamber to participate in the combustion, causing the vehicle to burn engine oil, emit blue smoke, and increase fuel consumption. The residues (the main component of which is carbon, which is very hard) after the oil combustion will accumulate on the combustion chamber wall, reducing the space of the combustion chamber, thereby reducing the compression ratio of the engine. At the same time, it will also accelerate the wear of the cylinders and pistons to reduce the vehicle’s Service life.

When adding lubricating oil, be sure to keep it slightly lower than the scale on the oil dipstick. In addition, it is necessary to grasp many factors such as oil model, season, climate, engine displacement, technical performance and so on. Therefore, it is best to choose a professional car maintenance center, after careful judgment on the car, choose the appropriate engine oil, and carefully operate the maintenance process to prevent hidden troubles. Of course, the general car maintenance center will not add too much oil for maintenance (cost control), but if you bring the oil yourself, the car maintenance center will not care too much. At this time, you should be careful not to add more lubricating oil.

Tip: Adding more oil is a misoperation. If you find that more oil has been added, it is best to entrust the car maintenance center to let it go.

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