“…The task of the work is to find out the ability of previously selected active microorganisms to assimilate the residues of petroleum products in the experimental setup. The issues of efficient use of fuel and lubricants were dealt with by S. Komiljonov [1], T Razzaqov [2], B. Tulaganov [3,6], B Shaymardanov [4], I. Тemirov [5], R. Khudayqulov [6], M. Amonov [7], B. Mirzaev [8,9,11,12,20], F. Mamatov [21][22][23][24][25], and others.…”