I have a xr6t ute 03 model I have had since new and the diff started making noises at low speed mainly when on uphill left hand turning after a few years of owning it.My friend was convinced I should change the oil so I took it around to his house with the oil and we changed it.What he did was jack the car up at the back as high as the jack would go to get as much oil in as possibal as he insists that service centres and ford itself on fill them on the hoists when level and dont get enough oil in.It fixed it and never had a problem with it again until this year when I got slack and asked the mechanic to replace the oil for me and within a month or so I started to hear noises again! Ive been slack again and havent done it myself yet but will do it again myself and hopefully should fix the noise again.
