there is no drain plug, you have to remove the whole cover to drain fluid.
( .054 inch ) according to fordparts.com
.044 inch , according to ford parts . com
Plug might be cracked .And might be arching
Driver's side of differntial, mid-way up case. You'll see a pipe threaded plug.
The rear differential plug is located on the inside top part of the differential. Where the drive shaft connects.
The spark plug number that is in my 2003 Ford Ranger XLT is: AGSF34FP - Motorcraft.
If it's not in the differential cover then it's in the side of the unit, probably a 3/8 drive square plug.
There's a drain plug on the bottom passenger side of the radiator. Unscrew it and the coolant will drain.
The spark plug gap for a 1983 Ford Ranger 2.8L is .044"
torque spec on the oil drain plug on a 2.9 ford ranger?
on the driver side on top of differential hub
spark plug gap on 1990 ford ranger 4.0?