Biodamages of combustive-lubricating materials in the conditions of northern regions

Fuels and lubricants which used in northern regions, are damaged by mainly bacterial microflora belonging to the genera: Pseudomonas, Enterococcus, Rhodococcus, Nocardia, Mycobacterium, Arthrobacter. Are most strongly subject to bacterial damage of a mix of hydraulic oils. The dependence between the family/genus of bacterial culture and the type of fuel used by microorganisms as a substrate. The optimal time of the laboratory experiment to study damage fuel bacterial cultures.