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Perfecto N 520 Turbine Oil Description Castrol Perfecto N 520 turbine oil is formulated from highly refined mineral base stocks together with rust ａnd oxidation additives to extend its inherent oxidation stability ａnd corrosion protection. Application Perfecto N 520 is primarily intended for the lubrication of steam turbines because of its resistance to foaming, demulsification performance ａnd its air release properties. It can also be used in lightly loaded industrial gas turbines where anti wear performance is not required ａnd turbo machinery where hydrodynamic lubrication prevails. Approval Status Perfecto N 520 meets or exceeds the requirements of BS 489 1999 DIN 51515 Part 1( L-TD) General Electric GEK 28143A 46506E Advantages Low foaming tendency ａnd air release properties. Good demulsibility ａnd corrosion inhibition performance. Page: 1/3 Typical Characteristics Name Method Units Perfecto N 520 Appearance Visual - Clear & bright Kinematic Viscosity @ 40 deg C IP 71 mm²/s 46 Kinematic Viscosity @ 100 deg C IP 71 mm²/s 6.7 Viscosity Index IP 226 None 102 Density @ 15C, Relative ASTM D4052 g/ml 0.877 Pour Point IP 15 °C -12 Flash Point, PMCC IP 34 °C 220 Acid Number, Total (Potentiometric) ASTM D664 mg KOH/g 0.1 Air Release Mins to 0.2%v @ 50C IP 313 minutes 4 Demulsification (IP 19) IP 19 seconds 60 Foam Sequence I, Stability IP 146 ml 0 Foam Sequence I, Tendency IP 146 ml 10 Foam Sequence II, Stability IP 146 ml 0 Foam Sequence II, Tendency IP 146 ml 0 Foam Sequence III, Stability IP 146 ml 0 Foam Sequence III, Tendency IP 146 ml 10 Rust Test, Procedure B IP 135 - Pass Rust test, Water wash IP 135 - Pass Copper Corrosion, 3hrs @ 100C IP 154 Rating 1A Rotating bomb IP 229 minutes 550 TOST Test, hrs to 2 mg KOH/g ASTM D943-95 hours 4000 The above figures are typical of those obtained with normal production tolerance ａnd do not constitute a specification