Thought I'd let you all know there's a new TSB out today:
TSB 13-9-6
Some 2013 Explorer, Taurus, and MKS vehicles
equipped with all wheel drive (AWD) and built on or
before 1/25/2013 may exhibit power transfer unit
(PTU) fluid leak. This concern may be due to a
PTU vent hose which is missing or disconnected.