(1) The choice of engine oil should be based on the requirements of the engine. It is not necessary to use too high-grade engine oil on lower-demand engines, or to use lower-grade engine oil on more demanding engines.
(2) Multi-stage oils should be selected as much as possible. Multi-stage oils have good protection effects on the engine due to its saving, long life, and high efficiency. Based on the characteristics of multi-grade oils, premature blackening may occur during use, and the oil pressure is smaller than ordinary oil.
(3) The quality of some domestically-made brand-name oils is quite good, and the price is lower than that of imported similar products. It can be used with confidence, and there is no need to blindly pursue “dollar oilâ€.
(4) If the engine is in good condition and the seasonal temperature is low, the less viscous oil should be used as far as possible so that the oil path can be opened. For example, in high temperature seasons or severe engine wear conditions, the use of high-viscosity motor oil is beneficial to oil film formation and engine wear.
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