Selection depends on the operational environment, discharge pressures and associated temperatures.
Diester based synthetic lubricants with excellent oxidation resistance and low carbon forming tendency which are intended for crankcase and cylinder lubrication of reciprocating air compressors operating at high compression ratios and high discharge temperatures.
Ester-free synthetic compressor lubricants formulated to give long life in oil flooded rotary screw compressors. Castrol Aircol SR grades are formulated with polyalphaolefin (PAO) base fluids and incorporate an additive system which gives outstanding oxidation stability.
Ashless compressor lubricants based on highly refined mineral oils for use in both reciprocating and rotary compressors, bearings and gears in rotary compressors, especially the oil flooded screw type.