Another pinner says: I just did this to my sink and it looks just as shiny as the picture. I didn't think my old, nicked up, stainless sink could look so good, but it does! How to make your stainless shine.
Once a month, add a cup of Distilled White Vinegar and a cup of baking soda during the HOT cleaning cycle. pour them directly into the drum. Then, add about ½ cup of vinegar and ½ cup of baking soda into the detergent dispenser.