These stainless-steel beauties may sparkle in the showroom, but keeping them that way at home takes a little TLC. First, and most important, remove spills and grime pronto to avoid buildup. Wipe down cast-iron grates with soapy water; soak them if needed. Avoid abrasives, bleach, and the dishwasher to preserve the grates' enamel coating, which protects the cast iron against rust. Towel dry for the same reason. If you do nick the coating, rub vegetable oil onto the exposed metal.
Use a specialty stainless-steel cleaner and a soft cloth, wiping in the direction of the grain, on appropriate metal surfaces.
No self-cleaning oven? Put a pan of water inside and set the temperature on high heat for about an hour to loosen built-up gunk; wipe out the interior with a damp cloth or sponge and mild detergent, as needed.