After a period of use of lubricating oil, the color will become black, some owners will think that the oil has been seriously deteriorated, and replace it, resulting in waste. General oil is added with detergent dispersant, the purpose is to adhere to the piston on the plastic film and black carbon wash down, so the lubricating oil for a period of time after the color is easy to black, but the oil did not deteriorate. So why is the color of the lubricating oil black? Today, Xiao Bian tells you.

First, the content of olefins in the fuel, sulfur content is high (easy to form sludge in gasoline engines, easy to form smoke stains in diesel engines), easy to make the engine black to speed up, so the fuel quality is the source of oil black.

Second, the structure and working conditions of the engine running in the northern part of Baotou are different, such as stop and go, which is easy to make gasoline engine sludge, diesel engine incomplete combustion, smoke stains, and thus darken.

Third: in order to overcome the above results caused by mechanical and fuel, lubricating oil to add a dispersant to prevent dirt or smoke stains generated or film deposited in the cylinder body, the higher the quality of the oil, better dispersion, but the oil is easy black, so high-quality oil, faster than black inferior oil.

Fourth: oil black to produce sludge is also related to the engine long time overload high temperature operation, and the car does not change the engine oil when cleaning the engine oil and the bottom, and the oil filter filter related.

Reminder: engine oil drain intervals should be appropriate, too early will cause the waste lubricating oil, too late will increase Baotou North Benz engine parts wear, shorten the Baotou North Benz engine accessories maintenance cycle and service life.