Propane Smokers.........I did not know this!!

[flash]

 I went down to refill one of my 20 lb tanks and was told it was past its 12 year old time limit. He filled it but told me to get it exchanged when I came back for a refill.  When I got home I noticed that one other tank will have to be exchanged also. At any rate, I was not aware of this, but can see it due to the possibility of rust.

 

[smokey charlie]

yeah they do the same thing on cutting torch tanks oxygen and acetylene every 10 years they have to be tested and re-certified