I just got my wife a new shopping kart it a 03 A4 1.8T 5M sport wagon to replace her 98 Volvo V70T5 5M. I love the drives and handles. I drive a Jetta TDI sport. Her car is my toy
The A4 has 100000klm and a new clutch. I noticed that it is leaking what looks like gear oil from rear tail stock of the transmission. how do I check the the fluid level for the what I woulg call the transfer case.

Any help to get to know these car better would be great

Thanks