This report, published as part of the SAE Cooperative Research Program, provides in-depth information on the properties of lubricants that are candidates for mobile air conditioning retrofits with HFC-134a. Numerous charts, graphs and tables are included. Property information reported includes hygroscopicity, miscibility, stability, lubricity, desiccant compatibility and polymer compatibility. A thorough reference for all working with HFC-134a! Addendum to HFC-134a Lubricant Study is also included.