Automobile oil has the functions of lubrication, sealing, cleaning and heat dissipation. The maintenance and maintenance of the car are not powered by the oil. So how to choose the oil is the care of the car? One of my friends is doing car repairs, and he has made a professional answer for me.
What kind of lubricant is the most suitable for your car?
Expensive and must be the best. The most important thing is the base oil. 80% of the lubricating oil is the base oil. Only the high-quality base oil can produce better lubricating oil to help the engine reduce wear. Extend life, and also extend the car oil change cycle, reduce the frequency and difficulty of maintenance and repair. Therefore, the choice of oil mainly depends on the base oil. The good base oil is used as a raw material. It has a strong high-low temperature viscosity retention performance, can form a sufficient oil film on the engine surface, has excellent wear resistance, and can ensure that the engine is in the engine. It operates freely in extremely warm environments.
Does the original engine oil need to be replaced?
Although manufacturers have to calculate the cost, performance and price factors, but there is always a bottom line, so the original oil is generally cost-effective, it can certainly ensure that the vehicle can reach the basic ideal working condition. In fact, a car is not the most suitable for the best, the most expensive engine oil, manufacturers use 0W-30 or 5W-40 and other markings of oil, is the engineer's precise calculation, entered the field test results, so if you change The oil should also be replaced according to the actual conditions of the vehicle. Of course, if you live in the cold northeast region, it is recommended to use 0W-20 oil. If you live in hot Hainan, you need to use 10W-40 oil, so you need to change the oil according to the area where you live. To replace it.
Do you use different oils in summer and winter?
In the winter, everyone must cover the quilt. In the summer, it may be just that you can use nothing to cover. So you can change the oil in the season, but this is not a necessary solution. This is not the same as the winter is not so many people are willing to replace the winter tires. If you care about maintaining the vehicle, you can change the oil according to the season. If you think that this is too much trouble, you can use the oil of the four seasons, such as 0W-40W.
Classification of oil?
Engine oil is generally divided into three categories: mineral oil, semi-synthetic motor oil and fully synthetic motor oil.
Mineral oil, the refining precision is not high, the flow point is high, that is to say, the low temperature fluidity is poor, so it is not suitable for use in the cold zone.
Semi-synthetic motor oil, which is a product of mineral oil based on purification by hydrocracking technology, is very close to fully synthetic motor oil and is an ideal over-product of mineral oil to synthetic oil.
Fully synthetic motor oil, this is a variety of motor oils synthesized by chemical methods. The oil quality is better, the performance is better, and it will be felt when used: the cold start is smoother; the fuel is more fuel-efficient; the oil change period is longer; Extend engine life and reduce maintenance rate; this engine is also cleaner because of its superior cleaning performance.