It'll be the diff input flange seal
Seal is a few quid but the chances are it'll want a flange aswell
Britpart do a nice kit, made a nice job on mine, but everyone else will tell you that britpart will make your car explode.
It's about 35 quid for the flange kit and that'll sort it for another 10 years
That's it but u might need FTC5258 too(this one will actually stop the leak) coz the kit contraines only a mudshield i think
can't find that product in the diff section , could you provide a link??
Thanks,
Fish
****ing moron