Mine was dead for years, then during a heat wave I bought some cans of whatever Napa had, charged it and it worked! (I did it mostly for that old dog there). A few years later it got wimpy and I heard about running on Propane. I use it allot here as I am off grid, had fittings to "do things". I found a couple of oz of oil left in one of the cans I got from napa, put that in the line I used to "inject" the LP and BINGO. That was a couple of years ago, still blowing cold. One page mentioned it's commonly used in Europe...Idk, the web you know. Btw autosurgeon, much thanks for the info! I'm learning from your posts.