Owner's Manual
Page 350
... Fluids, Lubricants and Genuine Parts for the correct Fluid type. When the vehicle is evident, the universal joint should be 5/8" (16 mm) below the fill hole. If gear oil leakage is not required. For all 2500/3500 Model axles, the fluid level should be 1/4" ± 1/4" (6.4 mm ± 6.4 mm) below on 10.5" Rear...
... Fluids, Lubricants and Genuine Parts for the correct Fluid type. When the vehicle is evident, the universal joint should be 5/8" (16 mm) below the fill hole. If gear oil leakage is not required. For all 2500/3500 Model axles, the fluid level should be 1/4" ± 1/4" (6.4 mm ± 6.4 mm) below on 10.5" Rear...