MIL-L-6086D, MILITARY SPECIFICATION: LUBRICATING OIL, GEAR, PETROLEUM BASE (NATO O-153, O-155) (30-JAN-1991) [S/S BY MIL-PRF-6086E]

MIL-L-6086D, MILITARY SPECIFICATION: LUBRICATING OIL, GEAR, PETROLEUM BASE (NATO O-153, O-155) (30-JAN-1991) [S/S BY MIL-PRF-6086E]., This specification covers two grades of petroleum-based lubricating oils for gears (see 6.1). This oil is identified by NATO Code Numbers O-153 and O-155 (see 1.2).