Well compared to the stock 9750sts i ran the year before, it kept it very well cooled never close to the red even on the hottest windiest day. The 9750 kept overheating due to having chaff build up when it was real hot and windy. We would brush it off then keep going then it would overheat again on that same side of the field going in the same direction. We blew off the radiator every once in awhile to keep it clean and there wasnt a whole lot of chaff compared to the ones without the scoop.