13 Sep When lubricating oil has darkened, should the oil be changed?
Lubricating oil turning black means the serious deterioration of oil, which also means that it needs to be changed. In fact, this only applies for non-quiet dispersant of lubricating oil as modern automobile lubricating oil is generally used with quiet breaking agent. This quiet agent will adhere to the film on the piston and black carbon deposit will be dispersed in the oil, thus reducing engine heat sediment formation. As a result, the lubricating oil which has been used will become black color after a period of time, although this does not mean that oil has gone bad.