Smoking 1993 300e M104 2.8

[latief]

I have some smoke coming off the back of the engine near the fire wall. i just finished my head-gasket replacement, so i know for sure that this not something related to the head gasket or the valve cover ( i checked, everything is nice and clean)...the smoke smells like burning oil, and it appears when the car sits for a couple of hours or even over night.....this problem was in the car when i bought it in July, and i assumed that it was related to the large amounts of oil coming out of the head-gasket. but i guess not....

so what else can leak oil back there? something should be leaking on the exhaust or on a very hot object to cause such smoke......smoke disappears after a few minutes...

any ideas? transmission is fine and car shifts and drives perfectly and smoothly....

Hopefully no more major work as the head-gasket really drained me out....

thanks,