QC JOHN. That is a fun loop to ride. I used to do it in my truck about four years ago. I hunt Coues whitetail deer up top of the switchbacks. We have chased a few good lions and bears up that loop as well. See ya on the trail.
Is the coating just pipe dope. It is a pipe thread sealer. I have not looked that close to the W/H in my trailer. Being in az i do not winterize. S i have just glanced at it from time to time. I am a plumber and use pipe dope on all my threaded conec...