| abstract |
(57) [Summary] [Structure] General formula: (M is zinc, copper, nickel, iron, cadmium, silver, lead, Antimony, tin or bismuth, R 1 , R 2 , R 3 and R 4 are each independently a lipophilic group having 1 to 30 carbon atoms, and at least one of these four lipophilic groups is a secondary lipophilic group. A lubricating oil composition comprising a metal salt of dithiocarbamic acid represented by (an oil group). [Effect] An extremely low-phosphorus or non-phosphorus lubricating oil composition having excellent wear resistance, extreme pressure resistance, friction characteristics, oxidation stability, caulking resistance, corrosion resistance, etc., which is particularly suitable as an engine oil. . |