Mobil 1 - leaks

[Joan Kotjarapoglus <jkot+@pitt.edu>]

I recently purchased a 94 100 quattro and after several oil changes
started using Mobil 1.  Later, I started noticing some oil drips on the 
garage floor.  I recall some info that was not uncommon on switching to 
Mobil 1. Question that I have is whether this leaking will heal itself
with time or on switching back to regular oil.  I have not added any
stop leak additive as yet.  Car has 56k and perfect otherwise so I want 
to correct the problem.  Open to all similar experiences and possible
solutions.  I think the leak is coming off the headgaskets.
 George K    jkot@pitt.edu