It COULD be indicative of an overheating VR....or of nothing more than old resin melting bcus.... well....it's old! It may not fail...but it's gonna keep making a mess till it runs out of goo. It's there to isolate parts from moisture and vibration.

I've seen plenty of these. VRs and Electronic ign boxes that GOO all over the firewall or inner fender and with the car running fine. I was going through a box of misc car parts in my garage not long ago that had an electronic ign box stored in it. The thing melted right inside the box! No engine heat needed!!! I bought the ecm in the late 80s to try and convert from points but never really got around to it. I took a photo...if I can find it on my computer.