LUBRICATING OIL COMPOSITION FOR ROTARY GAS COMPRESSOR

摘要

PROBLEM TO BE SOLVED: To provide a lubricating oil composition for rotary gas compressor, not generating a trouble of clogging its filter caused by a sludge even on using it in a rotary gas compressor having an extremely excellent mist separation system exhibiting its mist separating capacity of <=0.02 g/Nm3 stray mist amount. SOLUTION: In this lubricating oil composition, (A) a lubricating base oil having an oxidation stability of >=50 min RBOT value and containing <0.09 mass % sulfur content is used as the base oil, and contains (B) an antirust agent.