I've got an intermittent recurring clunking and chatering diff.(mostly in and out of 1-2 auto gears) with more recently diff. noise when turning and on corners. Its been back and forwards to Ford, who have changed the type of diff oil, replaced the drive shaft and last of all replaced the diff casing. The later worked pretty well for about 8,000k's but now the sounds are back with vengeance. The car is now also back to Ford but I'm not holding much faith in their expertise as 60K KM's later they still havnt fixed the problem! Hoping that someone out there may be able to share a similar experience in the AU range, and also perhaps knowledge of a solution that may help Ford get it right!