Abstract
Permanent improvement of metal structures of up-to-date diesel engines actualizes creation of new, higher quality analogues of motor oils. For some time past the goal-oriented studies into application of multifunctional alkylphenolate additives АКİ (С8-С12) series as calcium salts of formaldehyde condensation with various amines ended in the creation of new lubricants of M-10Г2k и M-14Г2 (API CC, SAE 15W-30; API CC, SAE 15W–40) grades. Experimental samples of lubricant compositions based on compound of basic oils M-8 and M- 12 obtained from Baku oils, alkylphenol additives synthesized at the Institute of Chemistry of Additives and viscous additives of Viscoplex (V) series of «Evonik» firm have been appraised by the results of qualification tests on Д-240 engine.