Servo system oils are premium quality anti - wear type lubricants formulated with superior quality of hydro treated base stock. They provide long service life and are recommended for hydraulic and circulation systems of wide variety of equipments. These oils are also used for compressor crankcase lubrication, but are not recommended for lubrication of turbines and equipments having silvercoated components. These oils pass Vickers V-1O4C vane pump test and meet IS:10522-1983 (Reaffirmed 2004) and IPSS 1-09-002 specifications.