Gear Case Oil

Lubricate these assemblies with non-corrosive type SAE 90 E.P. (extreme pressure) gear oil conforming to MIL-L2105B multi-purpose gear lubricating oil requirements (API Service GL 4) with ambient temperatures from 40 to 100°F (4.4 to 37.8°C). Ambient temperatures below 40°F (4.4°C) require an SAE 80 E.P. lubricant; above 100°F (37.8°C) use an SAE 140 E.P. grade oil.