Changed the oil in my Dad's Expedition, and grabbed a sample - 5w20 Motorcraft. Waiting on the kit from Blackstone. We tow quite a bit, and there's 4138 miles on this oil.
Also found the drain plug threads stripped.
No way to know who did it. He's had the oil changed a Wal-Mart, Quick Lube, and the dealer. Last change was at the dealer. If someone else stripped it, why didn't the dealer say something?
![[Mad]](images/icons/mad.gif)