"SH/T 0258-1992 Color Determination Method of Lubricating Oil" is one of the Chinese petrochemical industry standards, which was issued and implemented by the State Technical Supervision Bureau in 1992. The standard stipulates the determination method of the color of lubricating oil, and uses the Luo Weibang colorimetric method for color comparison and measurement. The standard describes in detail the instruments and equipment required for the determination, the operation steps and the calculation method of the results. It is suitable for the color determination of various lubricating oils. Its formulation aims to provide standardized testing means for the color quality control of lubricating oil, help production enterprises and testing institutions to accurately evaluate the color characteristics of lubricating oil, and ensure that the product quality meets the relevant requirements. It is widely used in petrochemical, machinery manufacturing and other fields.