These threads are timeless and permanent. I was just responding to the title question: "Automatic Car Wash -safe?"
So as applied to you, maarp, I guess the answer is, "no, but not as unsafe as doing nothing."
Of course, the better answer is at -4°F, just move!

 

Anyway, my original question was in regards to leaks, not paint damage. In a perfect world, I would hand wash all the time.