Many friends who own a private car will know that they need to add certain lubricants when car maintenance, but sometimes they know that it is one thing. It is another matter to know how to correctly add and avoid misuse. So, today is small I would like to introduce to you some misunderstandings about adding lubricating grease. I hope that netizens will pay attention to future maintenance and do not do any useless work;

Diesel car uses gasoline engine oil

The power system of the car can be supplied by gasoline or diesel. The engine oil is also divided into gasoline engine oil and diesel engine oil. Although gasoline engine and diesel engine work under high temperature, high pressure, high speed and high load conditions, there are still two The big difference is that the compression ratio of the diesel engine is more than twice that of the gasoline engine. The main parts are much more affected by the high temperature and high pressure than the gasoline engine, so some parts are made of different materials. The bearing bush of the diesel engine must be lead bronze or lead. High-performance materials such as alloys are produced, but these materials have poor corrosion resistance; therefore, in the refining process of diesel engine oil, a number of preservatives are required, and the gasoline engine oil does not have such preservatives, so once added to the diesel engine Will cause the diesel engine's bearing bush to appear half a point, the pits, and even the negative consequences of the piece of flakes, the oil will quickly become dirty, and cause the burning tile to hold the shaft accident;

Domestic cars blindly use imported engine oil

Many things need to be tailored to local conditions and timely, and the same is true for car maintenance. It is not that the imported oil will be better. Because most imported oils have lower viscosity, they are not suitable for the viscosity of domestically produced vehicles. In addition, the materials of various matching parts of domestic engines are larger than the imported cars due to the thermal expansion coefficient and matching clearance, and most domestic car engines do not have oil radiators. If blind imported oil is used, the engine will be oiled at normal working temperature. The oil pressure of the dilute is low, and even the specified working pressure is not reached, which can not meet the needs of normal lubrication, and the wear of the engine is intensified;

Blindly choosing lubricants

Lubricating oil, as its name suggests, its role is mainly in lubrication, but in fact it can also provide cooling, rust, cleaning, sealing and buffering for various machinery; the quality of lubricating oil is directly related to the length of engine life. Therefore, do not blindly choose engine oil; when selecting engine oil, it is necessary to pay attention to the quality level, but also pay attention to the viscosity grade; firstly, the performance level should be selected according to the compression ratio, displacement, etc.; then the viscosity level is selected according to the temperature and load. In the selection of oil quality should be high and not low; good quality oil can ensure good engine lubrication, reduce wear, extend engine life, extend oil change cycle, reduce the frequency and difficulty of maintenance and repair; when choosing oil viscosity In addition to the temperature conditions, under the conditions of ensuring engine lubrication and sealing, try to use low viscosity oil to save fuel; lubricating oil filling machine

Premium cars must use imported lubricants

In fact, high-end cars and domestic car lubricants are the same, not the high-grade lubricants of your car should be imported; to evaluate the quality of lubricants is not to see the strength of its advertising, but to see its quality indicators and actual use. The effect; at present, most of the imported lubricants sold in the domestic market are joint ventures produced by foreign companies with China. Most of these lubricants use domestic base oils, and the compound additives are blended and produced in China. The quality and effect can be imagined; for example, many German Flowserve lubricants from well-known car manufacturers;

Blackening of the oil is the deterioration of the oil

Many times, when we are doing maintenance for the car, we will see that the engine oil is getting dark. I often feel that this has deteriorated. Just like the leftovers in the house, we will judge it directly. Can not eat the same, in fact, the blackening of the oil does not necessarily mean that it has deteriorated; although the working condition of the engine oil is high temperature, it is relatively easy to oxidize and deteriorate, which will affect its lubrication, but as the quality of the lubricating oil continues to improve, especially The use of thickened engine oil, the blackening of the engine oil does not necessarily mean deterioration; the clean dispersing agent added to the thickening machine oil disperses the deposit on the machine parts in the oil, making the oil color black; whether it is deteriorated, various indicators should be carried out The test, the regular oil change, reduce unnecessary waste; therefore, whether the oil can not be used or undergo careful experiment, for the car owners to change the oil regularly to avoid the so-called deterioration, but Black is not equal to deterioration;

Editor's Note: Engine oil plays a very important role in car maintenance. It is not just as simple as lubrication. Therefore, it is a good maintenance knowledge for home car owners to avoid misunderstandings in use. Only by paying attention to these places can we Extending the service life of a car, the quality of a good car is of course important. It is also important to know how to care and maintain. I hope that this small common sense will play a role in the future use of lubricating grease by the majority of car owners;

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