A new device is offered for the analysis of motor oil contamination of the internal combustion engine with dispersed particles. To enhance the information content of the output data and the possibility of the continuous automated monitoring, as well as improve the accuracy, efficiency and reliability of the measurement device uses opto-electronic method of analysis of pollution of motor oils based on a method of ""spot test"".

Keywords: lubricant, optico-electronic device, the internal combustion engine, motor oil, methods for analyzing contamination, optical inspection method