whine

Hi all. A few days back I picked up a 2nd hand Gen2 2017 with 44k kms on it. Extensively test drove it and it was perfect throughout. First day of owning it and I started to hear a whining noise from the rear end. Dealer has diagnosed a shot ring and pinion at the back. Previous owner swears...

Brought my 2014 Raptor into dealership for 100,000 mile service. Told them to change oil, transmission fluid, front and rear differential oil, transfer case oil, coolant flush, brake fluid, fuel system clean etc. (said they could tell plugs had been changed so did not do them). A couple hours...