Car maintenance is essential in the changing seasons. If the car is not maintained before the winter, it will produce very serious wear and tear, which is equivalent to the wear and tear of several years of running under normal maintenance. How can I choose the right product for my car?
The temperature drops significantly in autumn and winter. Ordinary products become thicker when the temperature is low, and their fluidity is weakened. It takes longer to reach the parts that need lubrication, which makes the vehicle difficult to start and wears more. Therefore, in autumn and winter, it is best to choose a product with a lower base oil viscosity, so that it can continue to bring good lubrication to the car engine.
Winter and summer engine oil is **
First of all, the choice should be made according to the requirements, neither can use too high-grade engine oil on the lower requirements, nor can the lower-grade engine oil be used on the higher requirements. The choice can be increased by one level on the basis of the manufacturer’s recommendation, or the performance of synthetic engine oil is better.
Secondly, try to choose winter and summer engine oil. No matter how the temperature changes, the oil can maintain a relatively stable lubricating performance, which has a better protective effect.
Again, choose depending on the situation. If it is new or in good condition, use low-viscosity oil as much as possible, such as 0W-40, 5W-40, and 10W-40, so as to make the flow faster and reduce the wear and tear at startup.
After *, if it is in the high temperature season or has been worn to a certain degree, it is necessary to choose high-viscosity oil, such as 15W-50, etc. This will help form a thicker oil film, maintain the oil pressure, and reduce oil consumption.
Do not add too much
The amount of oil added is not as much as possible. If it is too much, it will increase the rotation resistance of the crankshaft, reduce the output power, and the excessive oil will burst into the combustion chamber to burn, causing the vehicle to burn oil, emit blue smoke, and increase fuel consumption. The residue 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 cylinder and piston, thereby reducing the service life of the vehicle. Therefore, when adding it, it is advisable to keep it slightly lower than the oil dipstick* high mark; in addition, it is necessary to grasp many factors such as the type of oil, the season of oil change, and performance.
No need to add additives
Generally, we do not recommend adding additives to the engine oil. Because its constituent parts are composed of base oil and additives, its formula has been tested and sifted through various tests and then adding additives may backfire. For example, it contains unique anti-wear additives, and the anti-wear properties are tested to be 50% higher than APISM standards. If anti-wear additives are added on this basis, the anti-wear performance may be slightly improved, but it is more likely to happen It is the chemical reaction between the anti-wear additive and the additive, which not only reduces the original cleaning and anti-wear function, but also increases the sludge and carbon deposits, which affects the performance and service life.
filter paper can be distinguished from good and bad
To identify the pros and cons, generally pay attention to a few points: ** is observation. If the oil is clear and yellowish-brown, it means its quality is good; if the color is turbid or emulsified, it means that it contains more water; if the oil has a burning smell, it means that it is prematurely oxidized or mixed with other oils. The second is to check whether there is sediment. The third is that the oil can be dropped on the iron plate or exhaust pipe above 110 ℃, if there is a popping sound, it means that the oil contains moisture. The fourth is to drop the engine oil on the filter paper and compare it with the speckle method. In general, high-quality engine oil should maintain suitable viscosity, neutralization, oxidation stability, wear resistance and corrosion resistance.
There are many fakes on the market. Car owners must carefully identify them. It is recommended to purchase or change oil at designated dealers, major brand gas stations or repair shops.
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