The propane itself won't go bad. The tank it's stored in will effect it though.Hello; A short while back I gave a neighbor a full propane tank to use in his grill. I bought the tank new about ten years ago but never had reason to use it. He tells me that his grill would not get very hot with my old tank. He got a new tank and the grill is running hotter again.
I was under the impression the stuff does not go bad. Any insights???