MIL-PRF-18458C, PERFORMANCE SPECIFICATION, GREASE, WIRE ROPE - EXPOSED GEAR (5 JUL 2002) [SUPERSEDING MIL-G-18458B (SHIPS)]., This specification covers corrosion resistant externally applied grease for use on wire ropes and exposed gears of hoists, winches, cranes, shovels, dredges, and other similar equipment.