A multifunctional additive for diesel fuels

A composition for a multifunctional additive was developed; in the concentration of 0.02–0.05 wt. %, it improves the quality of diesel fuel on six indexes simultaneously: it decreases the solid point and limiting filterability temperature with production of winter fuel on a summer fuel base for regions with a temperate climate; it ensures sedimentation stability at negative ambient temperatures; it improves antiwear properties; it increases the cetane number; it decreases exhaust smoke. A zero-waste, environmentally safe process for manufacturing the additive is proposed.