How much is the use of lubricating oil affected by temperature?
At present, many lubricating oil brands on the market, most of them use the bulk lubricating oil recommend by the manufacturer when maintaining the car. This lubricating oil is commissioned by the manufacturer according to the sealing of the cylinder of the car and the gap size of the parts to be lubricated. The manufacturer's production is very targeted.
At present, many lubricating oil brands on the market, most of them use the bulk lubricating oil recommend by the manufacturer when maintaining the car. This lubricating oil is commissioned by the manufacturer according to the sealing of the cylinder of the car and the gap size of the parts to be lubricated. The manufacturer's production is very targeted.
lubricating oil is divided into five levels:
The lubricating oil of gasoline engine can be divided into five levels of SE ~ SL, the lower the quality level, the better the lubrication performance. Every car has its own lubricating oil level. If the owner chooses the lubricating oil, he should not use the lubricating oil level lower than that specified by the car manufacturer. In addition, he should choose the appropriate viscosity oil according to the weather conditions. New cars and overhauled vehicles should try to choose high-quality lubricants 'viscosity should also choose low' so that the running-in of the car will be more beneficial. 40 or 15W/40 lubricating oil can be selected to remind car owners not to add repair agents or oil-saving products to prevent the occurrence of shaft-holding and tile-burning accidents.
The number after the oil grade ranges from 5 to 50, the bigger the number, the more viscous the oil, and the thinner it is.
In summer, try to choose oil with high viscosity, such as 40, 50, etc. Because the viscosity of lubricating oil changes with the increase of temperature, that is, the viscosity of lubricating oil decreases when it is heated, the oxidation resistance deteriorates, it is easy to deteriorate, and even causes faults such as burning bush and holding shaft. Therefore, the crankcase and gearbox should be replaced with a higher viscosity summer lubricating oil..
In addition, there is a widely used multi-grade lubricating oil with "W" to indicate that it adds a polymer polymer substance. In addition to the characteristics of general lubricating oil, its viscosity can be adjusted within a certain range. "Thickening when cold" can reduce the resistance and wear of engine operation. Summer car can choose 20W/50 lubricating oil.
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