In this program, bearings and pistons were stored in jars containing both operational hydraulic fluids (MIL-PRF-83282, MIL-PRF-87257 and MIL-PRF- 5606) and rust inhibited hydraulic fluids containing BSN (MIL-PRF-46170 and MIL- PRF-6083). In addition, hydraulic pumps were filled with MIL-PRF-83282, MIL-PRF- 87257 and MIL-PRF-46170. Jars, containing bearings and pistons, as well as hydraulic pumps were stored for up to 3 years in a laboratory environment to determine if operational fluids would ...