Founded in 1873, Atlas Copco has a proud history of making air compressor systems. What they don’t make is oil. Like so many others who manufacture compressors, they contract with lubricant companies and they put their name on the label. Plain and simple, they are a middle man who drives up the price of your oil. Any oil used in your air compressions system that meets the minimum specifications can be used without voiding the standard warranty on your unit as the manufacturers allude to at times. U.S. Compressor brings you quality and service. The best in the industry…… Period.