I would like to think I keep my 2000 E pretty clean. I wash the old fashioned way with soap, water, and brush. No power washing for me. Taking the plastic case saver off almost everytime I wash my bike which makes washing take at least 10 minutes longer. After my last ride I did a quick wash down of the bike before it went into the garage (I got home real late at night), but I planned to do my normal detailed wash a couple days later. I did not really get into a lot of mud, but I guess it was more than I thought. When I pulled the plastic case saver off it was packed like after a mud race I did back in October. Not only was it packed with mud, but the rust that had already started to form was incredible. Not to mention that someone posted about loosing a chain with the plastic cover in place and still busting the case. My wife asked what I wanted from my birthday back on the 7th and I told her one thing was a Kiwi case saver from Scott Summers Racing. I don't normally pimp products, but this one will save a lot of time, trouble, and maybe a chain/sprocket due to rust and grinding of sand. It fits well and you can keep things clean and oiled without a T wrench. About the best $35 I have spent in a long time. It is sure to pay for itself in parts and labor in no time. I am not sure who at Suzuki thought that plastic cover was a good idea, but I have a feeling it was the same guy that back in the early 80's thought that a rear window on a car that only went down half way was perfect. Just my thoughts on a dirty subject.