You could try to exchange it at one of those Amerigas or Blue Rhino places... They don't really 'look' too hard at the one you are turning in. I've never had one check the date on them.. I've turned in all my old tanks this way over the last year now.
Just make sure you check the expire date on the one you are getting... I exchanged my 12 year old tank at a 7-eleven and I had to pick though a couple of them before I found one that had at least a 2013 date on it... The first one he pulled out had a date of 2002! The same age as the one I was exchanging!
So, for $24, I got a 2013 tank with a fair amount of gas in it and got rid of my almost expired tank in the process..
I see new tanks in the stores for $30 and then you have to still fill it!
Good luck!
Mitch
