I was wondering if it was a local thing too, but U-haul in Panama City was the only one who wouldn't re-fill my Worthington aluminum tank, based on manufacture date. I'd like to get it hydro'd, but haven't found anyone who does LP gas tanks, everybody but U-haul will fill it, I asked and they said as long as it passes a visual, they can.
They are really strict up here in Oregon. Nobody I talked to will refill my Aluminum tanks past the expiration date- but they gave me a company who can "re-certify" them. My tanks look brand new:
I think it's a scam.
Well, for higher pressure vessels, especially aluminum ones like scuba tanks, I see the need for hydro's, and maybe even visuals, I looked up about aluminum propane tanks and there are apparently a couple of ways to rectify them, visual being one way.