Ya know if the grill material is actually aluminum, it won't rust like steel atleast not the same color. Aluminum Oxide is white and brittle. So if you get a light coating of white powdery looking film just use a brass brush and it'll come of real easy. If it's not aluminum then you could have just gone to Home Depot or Lowes and bought the same stuff for less. And I'm not totally sure but Lowes and Home Depot may even have the Aluminum. What I want is the grill material that was used on my WW hood so all my grills match.