Javadova A.
Dr.of Technical Sciences,professor, head of «Laboratory of  Additives Composition»
Yusifova A.
Ph.D. of technical sciences, leading researcher of «Laboratory of Additives Composition»
Yusifzadeh G.
Scientist of «Laboratory of  Additives Composition»
Dadashova T.
Scientist of «Laboratory of  Additives Composition»
Maharramova Z.
Scientist of «Laboratory of  Additives Composition»

Abstract
The widespread use of M-20B₂f motor oil used in ship makes the development of this modern analogue important and urgent. For this purpose, calcium salts of condensation products of alkylphenols with high alkaline number with formaldehyde and various amines, based on the replacement of detergent-dispersant VNII NP-360 and -354 additives used in the lubricating composition of the said oils were studied. By studying the detergent-dispersant and at the same time anti-oxidation properties of alkylphenolate additives at different temperatures and times, based on the amount of sediment formed during the oxidation process, low molecular volatile acids and acid number results, the use of AKI-114 and AKI-150 additives was preferred as high-performance detergent-dispersant additives in lubricating compositions of and M-20B₂f motor oils.

Keywords: motor oil, additive, ship and drilling equipment, alkylphenol, detergent-dispersing property, oxidation, alkaline number.