Come on, what oil?

Family cars are usually filled with gasoline. If the car is a general family car, use a naturally aspirated engine and add 92 # gasoline. If a turbocharged engine is used, it is recommended to add 95 # gasoline. If your car is equipped with a high-performance large-displacement naturally aspirated engine or a high-performance turbocharged engine, you need to add 98 # gasoline.

Different brands of gasoline have different octane numbers. The higher the label, the higher the octane number of gasoline, and the better the antiknock performance of gasoline with higher octane number. If gasoline with poor antiknock performance is added to the engine, knocking may occur.

This is an abnormal combustion phenomenon in a knock engine. When the piston is in the compression stroke, the piston will run upward, and the temperature and pressure of the combustible mixture will rise. Therefore, in order to prevent knocking, it is necessary to improve the grade of gasoline.

The classification of diesel oil is based on freezing point. At present, the light diesel oil used in China is divided into six grades according to the freezing point: No.5 diesel oil, No.0 diesel oil, 10 diesel oil, No.20 diesel oil, No.35 diesel oil and No.50 diesel oil.

The choice of diesel oil is based on the temperature at which it is used. Cars choose the corresponding brand of diesel according to the temperature, and the lowest temperature is above 8 degrees Celsius, so choose No.5 diesel; Choose 0 # diesel with the lowest temperature above 4 degrees Celsius; If the lowest temperature is above minus 5 degrees Celsius, choose minus 10 diesel; The lowest temperature is above minus 14 degrees Celsius, and minus 20 diesel oil is selected; If the lowest temperature is above minus 29 degrees Celsius, choose minus 35 diesel; The lowest temperature is above minus 44 degrees Celsius, so choose diesel with minus 50. Million car purchase subsidy