I want to get a grill cover for cold weather. I know that Dodge dealers offer one that keeps the 10% opening that is recommended. With what they charge for oil, filters, etc. , I think I like to see if there are other better options. Do any of you use one, and/or have any suggestions of where to look. I had a good one on my old GMC diesel that came from Cabala's, but they don't seem to have anything for Dodge.