RE: What ATV are you riding?
Honda Rancher.
I do think that a muddy ATV makes it look good, but I always wash mine and keep it clean as part of the regular maintenance. The salesman at the dealership that I got my wheeler from said that one of the most important things to do to keep your atv running good is to keep it clean. I put that ahead of a tough looking ATV. Just my 2 cents.