Patent ID: 8455406

Claim:
A compressor lubricant composition possessing excellent oxidative stability, said composition comprising: (i) from 68 to 99.999 wt % of an isomerized base oil or blend of isomerized base oils; (ii) 0.001 through 20 wt % of a blend of an ashless additives having a viscosity at 40° C. in the range of from of from 50 mm 2 /s to 60 mm 2 /s, a density at 20° C. of from 0.95 through 1.05 g/cm 3 , flash point of greater than 100° C.(COC), solubility in mineral oil of greater than 5 wt. %, sulfur content of from 4.8 through 6.0 wt %, and phosphorus content of from 2.9 through 3.6 wt. %; (iii) less than 1.0 wt % of a dithiocarbamate.