You can also try wood stove paint. I bought some but haven't used it yet. It states on the can that it is good to 1200F. Within an hour or two of applying the paint, you're supposed to cure it for an hour at 400F or above. Probably could withstand a grease fire if cured correctly.
Anyone tried it yet? I've been putting it off.
Hot Rod Hog Cookers Association, Charter Member, President