Master Mechanic, QT, Air Compressor Oil, Non-Detergent, All Weather Blend, Prevents Oil Breakdown With Additives That Inhibit Premature Wear, Formulated To Reduce The Friction & Wear In The Heat Produced In Compressor Pumps, Resists Lubricant Oxidation & Minimize Value Deposits, Routine Oil Maintenance Assists In Extending The Life Of Compressor, Note Not For Use In Gas Engines.