where the diff goes into the sump, there is a big o-ring that slots around the diff to stop this from happening

it's going to be engine oil that's leaking

unfortunatly, the diff doesn't come out past the crossmember as there isn't enough space for it, so crossmember out, or at least dropped, is the order of teh day

i'm sure someoens said that theyv'e done it without dropping it, but whenever i've tried to remove them, they've never had enough clearance

on the plus side, the o-ring is about 50p but when mine went, it took 6 hours of labour to get it fixed