Whoops, correct. My eyes breezed right over the word coated. I may have assumed he meant "coated with burned on stuff".
Originally Posted by Kestas
Seasoning works with material that has nooks and crannies on the surface, such as gray cast iron. The OPs grill is coated and likely has a smooth surface. You wouldn't season a stainless steel or aluminum pan, not that anybody uses them anymore.