A compressor lubrication system is a hydraulic system that injects a specified amount of lubricant into the cylinder and packing. This enables the piston and piston rod to travel on an oil film to optimize the life of the packing and piston rings. The lubricant type, the lubrication system, the cylinders, and the seal rings are all an integral part of total compressor lubrication. Premature wear of pickings, piston rings, or cylinders is an indication of improper lubrication. This paper will identify the components necessary to build a proper lubrication system and how to monitor the system to ensure it is working correctly. It will also identify the proper viscosity of oil necessary to build a sufficient oil film as well as some design and field issues with current lubrication system components.