I have no knowledge of which generation ptu ended up in my 2019, but it does ENRAGE me that FORD designed this GEAR BOX sans the drain plug to make it as difficult to service as possible. In addition to the heat soak with the position - the straight tiny quantity of lube keeping this thing alive is one of the problems.
Ford Engineering: "Hey EVERYBODY! We've got this great idea to build a gear box without a way to change the lubricant. Isn't that a GREAT IDEA?!!"
Everybody: Sound of crickets....