Oil problem in automobile maintenance

Every car owner should know about the oil problem in car maintenance!

Vehicle maintenance is one of the most basic items that every owner must experience, and it is also the most basic item to ensure the service life and driving comfort of the vehicle. Automobile maintenance is a very common concept, which mainly includes the cleaning, inspection and replacement of engine oil, oil filter, gasoline filter, air conditioner filter, gearbox oil, brake oil, spark plug and antifreeze. Generally speaking, car maintenance can be divided into major maintenance and minor maintenance according to time and mileage. Minor maintenance is subject to 5,000 kilometers, mainly replacing oil, air filter and oil filter; Major maintenance is based on 10000 km, including inspection and replacement of all items. Today, let's talk about maintaining 5000 kilometers of oil.

Classification of engine oils

Engine oil is a very important part of the engine. Its main function is to lubricate and reduce wear, assist cooling and prevent internal corrosion of the engine. It is also the most basic guarantee to ensure the service life and driving safety of automobile engines. Generally speaking, different vehicles need different oils to ensure that the vehicle engine is not damaged.

The API divides engine oil into two categories: the "S" series represents gasoline engine oil, and the specifications are: API SA, SB, SC, SD, SE, SF, SG, SH, SI, SJ, SK, SL, SM and SN.

Diesel engine oil is divided into standard models: API CA, CB, CC, CD, CF-4, CH-4, CI-4, CI-4/CI-4+, CJ-4 and CK. At present, the highest level of environmental protection is CK. Where c stands for diesel engine oil, the second letter stands for engine oil grade and environmental protection standard, and the number 4 stands for four-stroke diesel engine.

Engine oil is mainly classified by SAE standard viscosity value. Take any model on the market as an example, such as 10W-40. First of all, the "W" in the first half is the abbreviation of WINTER, which means winter, and 10 is the fluidity of this oil in winter. The smaller the previous figure, the better the fluidity of oil in winter. However, the following figure shows the possibility of oil dilution at high temperature in summer, that is, high temperature stability. The larger the following values, the better the high temperature stability. It can also be divided into other types, but it is more common in life to be divided into stickiness.

How to choose the right engine oil?

First of all, the vehicle model recommended in the vehicle manual shall prevail. Find the recommended oil type and oil type from the vehicle instruction manual, which determines the most balanced performance and the lowest filling standard of oil. Therefore, when maintaining the vehicle, try to choose the same or higher performance engine oil described in the manual to avoid engine damage and unnecessary failures.

Secondly, choose the oil according to the local temperature. In China, it is mainly divided into northern and southern regions. The winter temperature in northern China is usually around-10 degrees, and the temperature in northern China can even be as low as -30 degrees. Therefore, it is absolutely not advisable to choose engine oil in an ordinary way. Be sure to choose low temperature resistant engine oil, that is, engine oil with a small amount of engine oil before use. In addition, try to make a predictable choice, otherwise it will bring inconvenience or even greater losses to the vehicle after sudden cooling.

Third, we should give priority to our own situation. The actual situation of vehicle use is also an important point when choosing engine oil. Whether the owner often drives violently, whether to use the vehicle under long-term overload and heavy load, and some special requirements, it is necessary to choose engine oil that is more heat-resistant than the specification.

Finally, choosing the right engine oil is the most responsible thing for the vehicle, which can effectively improve the service life of the engine, make the daily use of the vehicle more comfortable and smooth, and reduce a lot of unnecessary troubles. Improper use of engine oil will bring many irreversible effects to vehicle engines. As a car owner, you should know how to maintain your car.