Rear Differential Contamination & Whine
SeriousGearbox & TransmissionEarly XF models (up to 2009) were sent from the factory with contaminated differential oil, causing excessive wear to the pinion gear. This leads to the rear drive shafts moving around and damaging the diff seals, producing a distinctive whine or groaning sound.
Whining or groaning noise from rear axle, Vibration under acceleration, Oil leaks from the rear differential
- Listen for differential whine on overrun during test drive
- Check for oil leaks around the rear differential
- Inspect MOT history for differential advisories