Now that I’ve got your attention…
Anybody try one of these? The OEM Tools 24444 Cooler System Refiller Kit.
I know I know, it’s not the quality of the Airlift, but consider (A) it does look to be reasonably well put together. There are parts that are plastic instead of brass, but they are solid-looking; (B) it’s not being used to support a dangerous weight above my head; and (C) at $82 it’s only a little more than half what the Airlift system would run me. In fact, Summit Racing is local to me and I believe they have one to pick up today for $77.
If I was doing this task more than every few years I would buy the Airlift in a heartbeat. But this seems to be a good deal for the occasional user.
This guy seems to like it pretty well:
https://www.youtube.com/watch?v=KbQ77-zDOEo
He digresses (a lot) at the beginning, to include talking about a clearly inferior competitor’s product that he’s comparing the OEM Tool to, so I’d recommend jumping ahead to about 7:05 for the actual review.
https://www.youtube.com/watch?v=W9Sx0YxrJnI
(It’s labeled as Schwaben, but it’s the same tool.)