| abstract |
(57) [Summary]nA two-cycle oil composition comprising the following (a) to (f): (a) 10 to 20% of a base stock oil of a first synthetic ester (copolymer of ester of dicarboxylic acid and α-olefin, viscosity at 100 ° C of 20 to 20%) 50 cSt), (b) 18-30% base stock oil of the second synthetic ester (oxo alcohol ester of dicarboxylic acid, viscosity at 100 ° C. 3-10 cSt), (c) 30-40% polybutene polymer (Mn 300-1500) (D) 15-25% of normally liquid solvent (boiling point up to 300 ° C, flash point 60-120 ° C), (e) 0.2-2.0% of oil-soluble copper compound, and (f) other lubrication Oil additive 0-5%. |