Differental is leaking

We need help! We bought a 2007 e2 and the differential is leaking. We drained it filled with 30w motor oil. And it is still “making” a mess all over itself.
Any help would be great.

Hi, I have a 2007 E2. When I first got mine it had a leak through the vent. The factory repair person put a spring loaded rubber cover over the vent for free. It might have been an up date or recall. I’m not sure. I have not had any leaks since then. Barry, Chico, Ca

Can you see where the leak is coming from? The newer GEMs often leak where the motor joins the trans.