Great Wall 18L 4503 Synthetic Air Compressor Oil in Centrifugal Compressors. Outstanding Oxidation Stability: Ensures long service life with low tendency of carbon deposit formation. Superior Oil-Water Separation: Rapidly separates water from oil condensed in air for clean operation. Anti-Corrosion Protection: Prevents compressor parts from corrosion and abnormal surface wear. Low Evaporation Loss: Minimizes oil consumption and maintains stable lubrication levels. OEM/ODM Customization: Full customization available including color and dropping point based on samples. Versatile Application: Suitable for low/moderate duty rotary, reciprocating, and centrifugal compressors.