That is odd because our 780 is absolutely fantastic at keeping the rad's clean and the air filter hardly ever gets any dust in it. I'd be surprised if the plugged filter came on if you left it the whole season.Don’t count on dynamic cooling doing much. Rad on my 760 plugs all the time. Dealer never could fix it. At least 3 more like it. Combine is decent. Seems the 780 rads run clean. Not sure why the 760’s suck.
Have never cleaned the radiators with Dynamic Cooling nor have they ever needed it.Our 780 with dynamic cooling is terrible for rad and filter plugging. I think something is bent slightly and not sealing properly. This year was really bad.