Does it help much at all....?

Thanks for your imput guys. Dan I was hoping you would see this thread. I guess it's hard to really quantify how much good it really does but it's one of the little things I do to 'baby' my car. I think it might be better for the hoses, wiring, and electrical things to let the heat escape. The part about seeing it done in the old movies...maybe I just imagined it?