The binary cooligomerization reactions have been carried out with the participation of alkenes-1 with dicyclopentadiene and the Lewis acid-type catalyst BF₃∙O(C₂H₅)₂ and the regularities of this reaction, the copolymerization constant values and the composition of the prepared products have been determined. The binary copolymer samples with average molecular weight 1600–6150 have been obtained and investigated as a synthetic component in the M-6 oil. It has been shown that by addition of alkenes-1-dicyclo­pentadiene binary oligomer as a synthetic component to M-6 oil, it is also possible to obtain both the base oil meeting the requirements for viscosity-temperature properties and to give the corrosion resistance to the obtained oil.