Are aluminum utensils dishwasher-safe?

It is generally best to avoid putting aluminum or iron utensils in the dishwasher. Aluminum items often react to the harsh detergents and high heat, which can cause them to oxidize and turn a dull grey or black color. For your best kitchenware, sticking to stainless steel is the safest way to ensure your pots and pans remain shiny and free from discoloration.