The results of the study of the effect oxidation processes on the viscosity-temperature characteristics of partially synthetic motor oils.

Based on the analysis of control methods and processes occurring in motor oils, the main indicators characterizing their quality are thermal-oxidative stability, temperature resistance, anti-wear and anti-friction properties and viscosity, which determine the resource of motor oil. However, these indicators are mainly used in the quality control of oils in production and have not been widely used in the operation of various equipment. The paper presents the results of a study of the effect of oxidative processes on the viscosity-temperature characteristics of partially synthetic motor oils: Castrol Magnatec 10W-40 SL/CF and Rosneft Maximum 10W-40 SL/CF at thermostating temperatures of 180,170 and 160°C. The following partially synthetic motor oils were selected for the study: Castrol Magnatec 10W-40 SL/CF and Rosneft Maximum 10W-40 SL/CF. The following instruments were used for the study: a device for thermostating oils with stirring, a photometric device for direct photometry of oxidized oils with a photometric layer thickness of 2 mm, and a low-volume viscometer for measuring kinematic viscosity at temperatures of 40°C and 100°C. The technical characteristics of the devices are described in the source [3].