I found a cool video dedicated on how to change the PTU Fluid on a Explorer. Z [url=http://www.youtube.com/watch?v=2t2YR1LVN3s.#]! No longer available] (http://[/url)! No longer available (http://www.youtube.com/watch?v=2t2YR1LVN3s.#) Hope this helps.
Courtesy of a SHOforum member
Ford Taurus & Explorer Police Interceptor PTU (+ SHO w/PP) Fluid Change - The Easier Method
https://youtu.be/pQBjQAq3La8 (https://youtu.be/pQBjQAq3La8)
Quotearvinmahida
Published on Jun 28, 2019
THIS METHOD ONLY APPLIES TO VEHICLES THAT HAVE AN OE DRAIN PLUG. Make sure your PTU vent tube is clean and venting before performing this method. Failure to verify this may create pressure inside the PTU while filling and will result in a messy situation with gear oil going everywhere!
Today I'll be showing you an easier method of changing the PTU (transfer case) fluid in this 2013 Ford Taurus Police Interceptor Sedan. This method also applies to the Explorer Police Interceptor Utility and Taurus SHO with performance package.
Please note this is preventative maintenance and may remedy a small humming sound, but chances are if you can hear grinding or any louder sounds from your PTU, it's probably in need of replacement. You should expect to get around 11-14 fluid ounces of gear oil out of your PTU. If your unit is leaking, you should estimate how much should go back into your unit.
Parts I used:
1/4in (M)NPT In-Line Check Valve
https://www.grainger.com/product/CDI-CONTROL-DEVICES-Brass-In-Line-Check-Valve-6D914 (https://www.grainger.com/product/CDI-CONTROL-DEVICES-Brass-In-Line-Check-Valve-6D914)
1/4" Brass Hose Barb with Straight Fitting Style
https://www.grainger.com/product/GRAINGER-APPROVED-Brass-Hose-Barb-with-Straight-6AFH6 (https://www.grainger.com/product/GRAINGER-APPROVED-Brass-Hose-Barb-with-Straight-6AFH6)
1/4in Brass (F)NPT 90° Union Elbow
https://www.grainger.com/product/PARKER-Brass-Extruded-Union-Elbow-13Y888 (https://www.grainger.com/product/PARKER-Brass-Extruded-Union-Elbow-13Y888)
Good luck, I hope this video helps!