wright1902glider wrote:
Last time I had to remove the high-temp stuff from the threads of SS
bolts in a boat motor, my Dad (an A&P for 35 years) made me use leaded
MOGAS. That was in 1979.

That loosened everything up, but I still wound up peeling most of it
off of the bolt threads, and then hitting it with an SS wire toothbrush
dipped in gas, followed by a red shop rag.

My dad must have known your dad. A rag soaked (dripping wet) in about
3/4 motor oil and 1/4 gasoline laid on the RTV for a day. That made
the RTV swell up and get very weak, then mechanically removed with
whatever was handy. I got that lesson in 1981.