112's and 113's (same design) have been known to leak from the timing cover bolts. Clean it, isolate it, remove the bolt and put a small bead of the Benz silicone on the shank, let it sit up for 10 min or so, then retorque the bolt. I will say I've not see it on the r/h side ..... yet, but the 2 below the oil pressure test port on the l/h are pretty good at it. The front seals on these will leak on occasion as well as the oil level/quality sensors stuck in the top of the upper oil pan behind the alternator. Just do this 1 bolt at a time.
Project Smoker, '87 603 powered wagon
Hauler, 96 CTD can you say torque?
Toy 73 Cougar xr7 convertible
Acme Automotive Inc.