Abstract: An engine cooling apparatus includes a fluid reservoir in fluid communication with a pump, the pump selectively directing fluid such as water under pressure to a series of nozzles mounted within a framework. The framework is positioned in surrounding relationship relative to an engine cooling radiator to direct selectively fluid onto the radiator to enhance evaporative cooling of the radiator. The invention is further arranged to optionally include a rotary blade structure mounted medially of the framework to direct fluid onto the radiator in concert with the nozzles.