[ChevLoRay]

I have one more pix I will share. Non-automotive RTV, like the white stuff sold under the GE name (and others) was used where I worked to post operating instructions and other info onto these vertical steel columns in the buildings. Some posting were safety, some not. Anyway, we'd make an issue of getting enough on the back of the laminated sheets to be sure they'd stick. When it came time to update the info, we'd tug and pull 'em off of the columns and there was always rust behind the RTV.

Here's a pic of my firewall. P.O. used RTV to seal up what he thought was the bad spot. Problem is, he also created a dam that held any liquid that fell or thawed and now my HVAC area is toast around where the AC unit mounted. At least the gasket for the HVAC unit was good and didn't let any water accumulate behind it. I'm gonna end up with an aftermarket HVAC unit, when all is said and done.

Look and weep: