I have a 2013 850 EXP EPS with about 300 miles on it. I rode it yesterday and about 20 miles into the run it started overheating. I did ride through soupy mud, but only up to the bottom of the quad. The radiator was clean when I started out, and became clogged. I hosed it out and continued with the ride. I previously owned a 2003 700 and this only happened once. I noticed on my 2013 that the radiator appears less protected on the sides from collecting debris. In addition the fan on my 2013 does not continue to run when I turn the ignition off, and then turn it back on with out the engine running like it did with my 2003. I would appreciate any feed back on this issue. Thank you.