The article presents the results of a study of the temperature degradation of motor oils of various basic framework and lubricity when the load changes, which have established a process flow thermal degradation of engine oils, comprising the sequential formation of primary and secondary degradation products, different optical density, and the impact of these products on the processes forming a boundary lubricant layer. The dependences of the wear parameters of temperature and temperature control loads on the basis of which identified education adsorption, chemisorption and modified layers. There are three characteristic temperature range of the parameter-dependent wear degradation products thermostatically controlled oil and load.
Shram, V. G., Lysyannikov, A. V., & Kovaleva, M. A. (2016). The Mechanism of Lubricants Protective Layers Formation in Friction Sliding. In Procedia Engineering (Vol. 150, pp. 458–463). Elsevier Ltd. https://doi.org/10.1016/j.proeng.2016.07.015