Compresyn HD DSR Series are diester-based compressor oils with long-life, extended-drain premium compressor lubricants. Based on proprietary technology, these oils significantly improve operational temperatures, hydrolytic stability, oxidative resistance, oil service life, demulsibility and wear protection. The base oils utilized in this formulation incorporate the highest quality shear-stable synthetic diester fluids and are fortified with a premium non-detergent/ashless additive system for maximum protection and superior lubrication at high temperatures and pressures where hydrocarbon-based lubricants break down. Compresyn® HD DSR Series compressor oils typically have an 8,000-hour drain interval and are best used in rotary screw or reciprocating compressors.