4Motion

[iMungo]

Hi al

My wife has a 2001 Passat Estate V6 4 Motion. When I last had it serviced the local garage said there was a slight oil leak from the rear diff. They said it will be a main dealer job to repair - can anyone hazard a guess to the cause of the oil leak or if this is a common problem with the 4 motion 4 wheel drive system? Some insight would be useful before I take it to the dealer and get bent over...

Thanks in advance.