| abstract |
(57) [Summary] [Purpose] The objective is to develop a lubricating oil for two-cycle engines or rotary engines that has excellent biodegradability, compatibility with gasoline, and good cleanliness. [Constitution] (A) Hindered alcohol and 5 to 1 carbon atoms 4 ester with fatty acid and (B) poly (oxyalkylene) aminocarbamate and / or alkenylsuccinimide, or (C) a hydrocarbon and / or aromatic having a boiling point of 500 ° C. or less and an aromatic content of 2% or less A lubricating oil composition containing 2% or less of an ether having 6 to 20 carbon atoms. |