*Fergana State University, Uzbekistan
**Central Customs Laboratory ofthe Republic of UZBEKISTAN
***Fergana State University, Uzbekistan
Online published on 1 June, 2021.
Scientific research in the direction of differentiating the belonging of motor oils and lubricants to synthetic, poly-α-olefin or mineral containing from 20 to 70 carbon atoms, or semisynthetic consisting of their mixtures, are the main ones, since the prevention of incorrect classification by the code of one type of engine oil and lubricants to others, it is conditioned by the introduction of customs control methods based on world-class achievements in the field of science and technology, as a result of which it becomes clear that only research in this area will help to solve the above-mentioned problems.
Base Oil, Lubricating Oil, Mineral Oil, Synthetic Oil