Forgetting to change oil lubricants for the season also sings "Four Seasons Songs"

Recently, Guangzhou rider Cai Yong found that his Hafei Lobo will hear a crisp, fast-paced “beep” sound when he reaches the 3rd gear speed increase; the lube oil temperature performance is too poor, and the engine will reach a certain temperature and then lubricate. The oil is as thin as water, and the normal lubrication of the engine cannot be ensured. The valve part only makes such noise. After inspection, he found that he used the wrong oil.

The mechanic in the repair shop stated that Mr. Cai used a single-stage oil for winter use. Now that the temperature is gradually increasing, the single-stage oil cannot meet the lubrication needs of the vehicle. It is recommended that it be replaced with a single-stage oil or multi-grade lubricant for summer use.

Originally, among the engine oils used in automobile engines, the oil that can only be used in summer or winter is called single-stage oil; the engine oil that can be used in summer and used in winter is called multi-grade oil or common oil for winter and summer. The labels for single-grade oils are SAE30, SAE40, SAE50, etc. The labels for multipolar oils are SAE10W/30, SAE15W/40, and SAE20W/50. Among them, SAE is the English abbreviation of the American Society of Automotive Engineers, SAE grade represents the viscosity grade of oil, W means "winter (winter)" meaning, the smaller the number in front of "W", the lower the low temperature viscosity, the engine cold start The better the protection capacity is; the figure behind "W" is the indicator of the high temperature resistance of the engine oil.

An oil change technician told the reporter that compared with single-stage oil, multi-grade oil is not only common in winter and summer, but also provides good lubrication, so now we all advocate the use of multi-grade oil for vehicles. During the running of the vehicle, the engine runs at a high speed, the temperature rises, and the viscosity of the multi-stage oil is high. It can reduce the chance of the engine oil slamming into the combustion chamber, thereby reducing the loss of the engine oil. Because of its excellent wear resistance, oxidation resistance, excellent low temperature fluidity and high temperature shear resistance and other performance. Therefore, when the engine is in operation, wear is reduced and resistance is reduced, thereby reducing fuel consumption and increasing the effective power output. Experiments have shown that using multiple oils can reduce frictional resistance. Compared with single-stage oils with the same viscosity, multi-grade oil can save 2% to 3% of fuel; in addition, due to the more stable performance of multi-grade oil, the oil change period will be longer.