It is introduced that diesel is the fuel for diesel engines in diesel cars, tractors, etc., and is also known as light diesel. Just like automotive gasoline, diesel also has different grades. The difference is that the grade of gasoline is determined by the octane number, while the classification of diesel grades is based on the freezing point of diesel. At present, the light diesel oil used in China is classified into six grades according to its freezing point: 5 # diesel, 0 # diesel, -10 # diesel, -20 # diesel, -35 # diesel and -50 # diesel. The selection of different grades of diesel should mainly be based on the temperature during use.
Generally speaking, No. 5 diesel is suitable for use when the temperature is above 8℃. 0 # diesel is suitable for use when the temperature is between 8℃ and 4℃. -10 # diesel is suitable for use when the temperature is between 4℃ and -5℃. -20 # diesel is suitable for use when the temperature ranges from -5℃ to -14℃. -35 # diesel is suitable for use when the temperature ranges from -14℃ to -29℃. -50 # diesel is suitable for use when the temperature is between -29℃ and -44℃ or lower.
Experts say that if the grade of diesel selected is not suitable for the operating temperature range, the fuel system in the engine may wax, clog the fuel passage and affect the normal operation of the engine. The lower the grade of diesel, the less likely it is to form wax, and of course, the higher the price will be. It is of course better to choose diesel of a lower grade within the temperature range applicable to one grade of diesel.
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Post time: May-09-2025