The results of experimental investigations on improving the demulsifying characteristics of inhibited turbine oils are presented. It was established that the Neftenol-BS demulsifier reduces the effectiveness of the corrosion inhibitor Neftekhimeko-1 by less than 2% whereas the demulsifying characteristics of inhibited oil are improved by 9.5 times. It was shown that an additive composition containing corrosion inhibitor Neftekhimeko-1 and alkenylsuccinic aldehyde in a ratio of 85:15 by weight is highly effective. Inhibited turbine oil containing such a composition at a concentration of 0.1 wt % had protective and demulsifying characteristics that meet the requirements in the operation of gas compressor units in media containing hydrogen sulfide.