I've recently noticed a small "weep" of oil in the front of the engine on my 87 300D. I'm hoping it isn't leaking from the headgasket because I have no residual pressure in the cooling system when the car is cold and it doesn't overheat. Any thoughts?

__________________
--------------------------------------------
1960 MB 190Db w/ full sunroof
1985 Toyota Pickup
2006 Honda Odyssey EXL R&N
2001 VW Jetta GLS TDI