AeroShell - 33MS/64 Extreme Pressure Grease, MIL-21164D, 14oz Improved anti-wear and corrosion resistance over AeroShell Grease 17 It is fully compatible with AeroShell Grease 33, so reduces the risks and problems associated with misapplication Load carrying and EP properties equal to that of the well established AeroShell Grease 17 Fully approved to MIL-G-21164D