Hey PJ, I just read that I need to change my oil and air filter after the first 5 hrs. I actually have 23 hrs already! My dealer is running 3 to 4 days on commercial service right now. How easy would it be for me to change it myself and would this affect the warranty? Also, I'm playing catch up right now(with all the rain). Will another 2 or 3 hrs hurt the machine? Thank for all of your help and I will pay more attention to the service aspect. Thanks again, Tim A.