> And on a seperate note, is there any "safety" advantage to using pipe
> "dope" (grey stuff) on threads where fridge connects to LP supply?
Neil:

That's a compression fitting, so all the threads are doing is
compressing the copper tube to the flange.  A little lube to
make tightening/untightening easier, if needed, but if it
leaks, it is not because the threads are not dopey.

Richard
Boulder