Likely an RMS/IMS leak - or something else?

[Gilles]

Originally Posted by nieuwhzn

Check if it is not coming from above the bell housing. In my case it was a failing aos apparently dumping enough oil in the inlet that it dripped down on the bell housing.

+ 1

I could swear that my valve cover was leaking when the AOS was the culprit.

The second time a couple of years later, the leak was caused by a crack on the lower accordion hose that connects the AOS with the crankcase vent valve...