If you show it some TLC, your cast iron skillet can last a lifetime — or more.Steer clear of these common cast iron skillet mistakes and you'll set your pan on a plan to be passed down for decades.Preheat your skillet in the oven whether you're baking, frying, or sautéing to avoid uneven heating.Use two primary skillets so sweet and savory foods don't impart conflicting flavors into the pans' seasoning.For best and easiest results when cleaning your cast iron, tackle the cleaning while the skillet is warm.Soaking your cast iron skillet in your sink is a recipe for rust, as is washing it in the dishwasher. . To avoid rust, only store your skillet once it is completely dry.Skillets need a re-seasoning after each use; spread a little neutral oil around the cooking surface, and then dry it