Aminoethylimidazolines of stearic and g-linolenic acids have been synthesized with the release of 92–
93 mas. % using the effect of ultrasonic cavitation. The obtained imidazolines were investigated as antiwear additives to low sulfur diesel fuels. The improvement of the lubricating properties of diesel fuels at a concentration 200–250 ppm of synthesized imidazolines in them was found out.