Used Oils — Components of Diesel Fuels

An effective method is proposed for the utilization of used motor and industrial oils (UMO and UIO) as additives to diesel fuels. As a result of investigation of diesel fuel L–0,5–40 with 5% of UMO and UIO, the maximum degree of variation was established in the concentration of actual resins in the fuel, its ash content, and carbon residue. A high-end-point distillation curve and an increase in viscosity are noted, i.e., degradation of quality as compared with requirements of GOST 305—82, which, however, is within standard limits set forth by TU 38.001355—86 for a diesel fuel with a high-end-point distillation curve. Results of testing of fuels with additives by motor methods, and also positive foreign experience enable us to propose that the method in question for utilization of UMO and UIO may find practical application.