The fall in temperature in autumn and winter is more obvious. Ordinary lubricating oil products become thicker under low temperature conditions, fluidity is reduced, and it takes longer to reach the location where lubrication is needed, resulting in less easy start-up and increased wear of the vehicle. Therefore, in autumn and winter, it is best to choose a lubricant with low viscosity and low pour point of the base oil, so as to continue to bring good lubrication to the car engine.
Carefully car in autumn and fall, carefully selecting autumn and winter lubricants
Winter and summer universal oil is the first choice
First of all, the choice of lubricant should be based on the requirements of the engine. Neither can the engine be used on a less demanding engine and the lower engine oil on a more demanding engine. The choice of lubricating oil can be increased by one level on the basis of manufacturer's recommendation, or the performance of synthetic oil can be better.
Second, we should try our best to choose a common motor oil for winter and summer. Universal oil can maintain a stable lubrication performance regardless of temperature changes, and plays a better protective role for the engine.
Again, it depends on the condition of the engine. If the engine is new or in good condition, use less viscous oils such as 0W-40, 5W-40, and 10W-40 as much as possible to make the oil flow faster and reduce wear on startup.
Finally, if it is in the hot season or the engine has been worn to a certain extent, we must use high viscosity oil, such as 15W-50, which is conducive to the formation of a thick oil film, maintain the pressure of the oil, and reduce oil consumption.
Do not add too much
The more oil is not added, the better. If the lubricating oil is too much, it will increase the crankshaft's resistance to rotation, reduce the engine's output power, and those excessive oil will enter the combustion chamber combustion, causing the vehicle to burn oil, smoke blue smoke, so that fuel consumption increases. After the combustion of the oil, the residue will accumulate on the wall of the combustion chamber, 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 the piston, thereby reducing the service life of the vehicle. Therefore, when adding lubricating oil, it must be kept slightly lower than the maximum scale of the oil dipstick; in addition, you must grasp the oil model, oil change season, engine performance and many other factors.
No additives in lubricants
Generally, we do not recommend adding additives to lubricants. Because the lubricating oil itself is composed of a base oil and additives, its formulation has been tested and screened. Adding additives can be counterproductive. For example, Great Wall Lubricating Oil contains unique anti-wear additives, which have been tested for 50% more wear resistance than the APISM standard. If the anti-wear additives are added on this basis, the anti-wear properties may be slightly improved, but it is more likely that the anti-wear additives and the lubricant additives chemically react, not only reducing the original cleaning and anti-wear properties of the lubricant. , but also will increase the sludge and coke, affecting the performance and service life of the engine.
Filter paper can be distinguished
Identify the merits of lubricants, generally pay attention to several points: The first is observation. If the oil is clear and yellow-brown, it indicates good quality; if the color is turbid or emulsified, it means that there is more water; if the oil has a burning odor, it indicates premature oxidation or mixing with other oils. The second is to check for deposits. The third is that the oil can be dropped on the iron plate or exhaust pipe above 110°C. If there is a popping sound, it means that the oil contains water. The fourth is to drop the oil on the filter paper and control it with a spot map. Under normal circumstances, good quality oils should be suitable for viscosity, neutralization, oxidation stability, wear resistance and corrosion resistance.
At present, there are a lot of fake fish on the market, the owner must be carefully identified, it is recommended to the designated dealers, large brand gas stations or repair shops for oil or oil.
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