MIL-L-21260D (AMENDMENT-2), MILITARY SPECIFICATION: LUBRICATING OIL, INTERNAL COMBUSTION ENGINE, PRESERVATIVE BREAK-IN (11-OCT-1990) [S/S BY MIL-PRF-21260E]
MIL-L-21260D (AMENDMENT-2), MILITARY SPECIFICATION: LUBRICATING OIL, INTERNAL COMBUSTION ENGINE, PRESERVATIVE BREAK-IN (11-OCT-1990) [S/S BY MIL-PRF-21260E].