Well guys I finally got a good look at the Crown C-5 that has the "On Demand Cooling" that they refer to. It's a hydraulic operated cooling fan mounted on the opposite side of the radiator from conventional systems. Every time the vehicle starts, it reverses and blows debris caught in the radiator due to the heavy suction from underneath the truck. I saw it used in a VERY dirty application, and the customer usually has to blow out their trucks at the start of every shift. The C-5 went for a week, and when the inspection screen was removed, there was absolutely no dirt in the radiator. -->And yes, it's American. Just like all Crown's it's made down in New Bremen, OH