Before terminal diff-panic sets in, perhaps some kind soul with a bit of spare time could jack their Xantia up for a minute or so and spin the wheels to see if it IS normal??if I spin the the wheel either way, stop and then spin the wheel the other way there is a distinct metalic noise from the diff as if something is falling back into place - is this normal?
I'd do it with the BX, but I'm unfortunately at work at the moment....