[s-cars] Audi goop vs the elements and time

[Airbil at aol.com]

I'll find this coolant dribble if it takes forever.  So; I removed the plenum 
cover to check the heater connections and sure enough, evidence of coolant 
(X/g12) at the hose clamps.  Now that I've tightened them and cleaned it up, I'm 
sure I'll never have a leak again. fingers crossed.
While there I noticed that the formerly black goop over the seam of strut 
tower and firewall has dried up after nine years of service and now serves only 
to trap water.  This is on the top both strut tower / firewall locations.  It 
looks like the galvanics have held up and I have considered painting it with 
por 20 or something like that?  
Or just get some oem, new and improved black goop sealer and paint it red?
Any and all galvanic thoughts on the correct way to repair this would be much 
appreciated.
TIA
Cheer's
Bill M ~ who, whilst in the middle of the annual summer gear shift changeover 
(alcantara rs4,) got to taste loctite green today for the first time... yes.. 
 ..very nice!