Theoretical study of motor oil chromatogram in express diagnostics using the drop test

Abstract

Abstract The quality and compliance with the requirements of motor oils used in operation is one of the key factors determining durability and reliability of the internal combustion engine (ICE). The operating conditions of motor oils in ICE have changed significantly with an improvement in the design of the engine, the increase in power, the increase in pressure in cylinders and the change in the torque of the crankshaft. The requirements to motor oils during operation are constantly increasing, the specified terms of oil drain interval are increased. The composition of motor oils has also changed, and the technologists are adjusting their finished oil compositions to increasing requirements. Thus, it is necessary to constantly monitor the state of oil during ICE operation, the use of traditional express methods of oil quality verification is not always possible for new brands. The study considers the theoretical justification for the application of the drop test for the brands of strongly alkaline oils – Vanellus C6 Global “BP” (U) 15W-40 and Neste Tyrbo LXE.