Fill Plug, Differential

Dana 60 and 70
Oil filler plug 27 - 41 Nm (20 - 30 ft. lbs.)

Ford 8.8-Inch Ring Gear
Oil filler plug 30 Nm (22 ft. lbs.)

Ford 9.75-Inch Ring Gear
Oil filler plug 30 Nm (22 ft. lbs.)

Dana S135
Fill plug 54 Nm (40 ft. lbs.)