I was looking through various ways people treat rust and found one that caught my interest. On the Lumberjocks's forum I found a reply to a rust post and a guy said about a product called "penetrol" by Flood. I guess it is a paint conditioner, but also can remove and prevent further rust on metal surfaces. I read up on it and got some to try out. It works great. Since I heat with propane, causing some moisture in the air, I wanted to stay on top of the rust and I hope this will do it. Bosheild's T-9 product probably works with the same results, but this is cheaper.