They have an additive called "engine ice" thats supposed to reduce engine operating temps, but I would think you may have had another issue. The electric fan idea seems like a problem also in the muddy/wet conditions. It seems like if you are riding along that the engine should not over heat at all. Maybe at a long sitting idle, but maybe I have just been lucky. Kaw Rider has done some homework on this topic, however, and may be the guy to ask about reducing temps.