I find it hard to believe that the EPA , with their micro-management of every little aspect of MVAC, would allow a fitting to be used that did not have a renewable/replacable valve core. I know you all are saying it's so, but I just can't believe it. That's nuts.
They mandate systems cannot be topped off without leak checking and leak repair, how can they allow a fitting w/o a fixable seal?
Someone with a 1995 E class, go get your bicycle stem cap, and see if your A/C fitting valve core unscrews a little.
