Leon wrote: "...So, with all that said think I'm going over board by having a fan in my garage blow air towards the grill every time it gets parked in there?..."
Leon, you're not alone. In the hot weather, whenever I pull my cars into the garage, I pop the hood and leave it up -- since there's no underhood light, it doesn't hurt anything. It lets the heat out, and (IMHO) will make some underhood components (rubber, plastic) last a little bit longer. And, as I glance inside, maybe I'll spot a little problem before I get a nasty surprise out on the road.