There I was, pulling out of a junction at 8.10am this morning (not bat-out-of-hell stylee, either...), and I was greeted with a bit of a lurch immediately followed by a fair bit of clunking from the rear. So I pull over where I can, thinking, "flat-bed time!", so leave enough room in front of me for a recovery wagon .
Have a quick look under the back, to be greeted by a swiftly-growing puddle of oil, clearly pouring out of the diff.
Phone is on its last legs, but still call the AA for recovery. Phone dies as soon as I've finished the call, fortunately. Told to expect someone hopefully by 9.30am.
Then I remember my meeting at 9am. So I have to trudge off up the road to find a phone box to call work!
But I managed to do that, and get back without missing the AA man. Although I couldn't be entirely sure due to not being contactable on my mobile!
So, got trucked home, car's now on the drive, having created another puddle on the truck, and creating a further one on the drive too.
I have had a look underneath, and the pictures of my findings are attached, first one is as is, and the second one is marked up as follows:
A & B - cracks!
C & D - the bolts have been pushed out by about 1/4-inch. Bolt C has actually been pushed in by me slightly, prior to taking the picture.
I think all the ATF has now drained out of it...