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It is a trend that the viscosity of oil is getting lower and lower. In recent years, many car manufacturers represented by Japanese, Korean and American cars are promoting the use of low-viscosity oil. Why is this? The reasons for this problem are as follows.
First of all, with the advancement of technology, the processing technology of the engine is getting higher and higher, and the fitting clearance of the parts is getting smaller and smaller. With such a high-precision engine, the viscosity of the oil used is naturally lower. Because only low-viscosity oil can reach the friction surface of the parts to fully lubricate the engine. If the oil with high viscosity is used, it will cause problems of poor lubrication, increased fuel consumption and loud noise. The use of low-viscosity oil will also reduce the running resistance of the engine and also reduce the fuel consumption. In order to further reduce the fuel consumption, 0W- The oil viscosity of 16 is marked.
With the protection of fully synthetic engine oil, low oil viscosity can also achieve sufficient oil film strength and high temperature shear resistance, so that the engine can use a lower oil viscosity to ensure lubrication and reduce fuel consumption. However, low-viscosity oil is not without shortcomings. For example, some large-displacement, high-horsepower, and high-speed engines are not recommended, because although fully synthetic oil improves the strength of the oil, it is not unlimited. Once it exceeds the oil's strength At the limit, there will still be a problem of insufficient oil film strength.
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