Determination of Replacement Terms of Mineral Motor Oils Based on to their Actual Condition

Abstract

The article proposes an approach to replacing motor oils according to their actual condition, and not according to the terms recommended by motor vehicle operating manuals and manufacturers, expressed in km. Experimental studies have shown that the most informative actual state of used motor oil is determined by TBN and TAN, which are among the main physicochemical indicators of the quality of motor oils. Based on the fact that, under the condition of TBN=TAN, the used oil can be considered as the one that has lost its properties, the rational terms of its operation were determined. These terms are 2,500-10,000 km longer than the recommended engine oil change intervals. By implementing the proposed approach in the conditions of large motor transport enterprises, it is possible to achieve significant savings in consumables and significantly reduce the period of maintenance of road transport. And this, in the end, will help to reduce the cost of transportation and minimize the harmful impact of road transport on the environment.