Self cleaning feature! Just sayin'.....

I got a freebie Kenmore oven from a friend when they bought a new one, I wanted it for powdercoating. It was in their house when they bought it, and was absolutely black inside with baked-on crud, never seen an oven that filthy. All my efforts wouldn't touch it, so I figured out the self cleaning operation. Thing cooked for several hours, but it was absolutely amazing how clean it was when done! Basically burned all the crud to ash, then wiped out with wet rags.