2 hours ago, cgsheen1 said:

warm to cold...

1 hour ago, chaseincats said:

I 100% agree but in this case its been 6 full years without leaking

Sounds like you don't agree 100%.

We're just offering possibilities. It's actually more interesting to some of us that the fitting was 3/4 turn loose and did not leak sooner.

If it was mine I'd pull that line and make sure I didn't need more parts before starting the MC replacement. Might find out that you don't need a new MC, you actually need a new hard line.

Or a new flare on that tube and maybe a new flare nut. I'd venture a guess that it didn't go 6 years without any leak at all - probably just one that was slight and unnoticed... (just like many plumbing leaks)

4 hours ago, Zed Head said:

Sounds like you don't agree 100%.

We're just offering possibilities. It's actually more interesting to some of us that the fitting was 3/4 turn loose and did not leak sooner.

If it was mine I'd pull that line and make sure I didn't need more parts before starting the MC replacement. Might find out that you don't need a new MC, you actually need a new hard line.

3 minutes ago, cgsheen1 said:

Or a new flare on that tube and maybe a new flare nut. I'd venture a guess that it didn't go 6 years without any leak at all - probably just one that was slight and unnoticed... (just like many plumbing leaks)

that makes sense