Join Date: Sep 2011
Thanked 258 Times in 197 Posts
I've used metal prep chemicals and some nuts/bolts to remove the rust. Some have rust inhibitors also, as you need something to stop it from rusting again. We have used RedKote sealer in a tank that was pretty bad, but that's my last resort. I'd rather clean it and use a phosphate to prevent rusting instead of a coating.
Keeping the tank as close to full as possible, and not using gas with ethanol, will help - especially for storage. I also add a few ounces of 2-stroke oil at the end of the year when I top-off the tank for storage.