These cars, near as I can tell, rarely if ever leak up front with head gasket probs; however, front seals are extremely common. As a matter of fact, as I understand it MBZ has recently come up with a new sealant that's supposed to be very effective-I'd have my independent check it out, or get your second opinion from a qualified dealer.

Clean it up as best you can; a clean motor makes it easy to diagnose problems accurately.
Good luck.

__________________
"If God had meant for us to walk, why did he give us feet that fit car pedals?" Sir Sterling Moss

Michael
2014 E63S Estate
2006 SLK55
1995 E500
1986 Porsche 944 turbo