XL - Extended Life Oils by Compressed Air USA Diesel Portable Rotary Screw Air Compressor Oil SCREW-XL-PD is a partial synthetic blend of ISO 46 lube and is designed for oil-flooded portable compressors. SCREW-XL-PD provides low-temperature operating characteristics including low pour point and increased low-temperature fluidity. Portable air compressors see a variety of environments and harsh work conditions, it is recommended to replace the oil at more frequent intervals. SCREW-XL-PD is designed to meet the most challenging operating conditions, while still remaining cost effective to replace often. Our air compressor oil is completely top-off compatible with OEM and Aftermarket equivalents. No drain or flush is required. Our blends highlight Performance, Efficiency, and Quality. We offer lubricants for all applications: centrifugal, industrial blowers, reciprocating piston, rotary screw, rotary vane, turbines, vacuum pumps, portable machines, gear sets, and hydraulic systems. Performance Advantages: extended fluid life, maximum oxidative resistance, wear protection, carbon and varnish protection, corrosion protection, readily separates water to minimize rust and viscosity dilution, excels in extreme heat or freezing cold, rated for 100% life at 212F(100C).