We have run an 04 8010 for 4 years and have to clean the rad and air filter about every 100 hours. We also have an 07 8010 that we got this year. It has a rad update on it and in 200 hour I blew the air filter once and the rad is still quite clean. The best piece of equipment we have is a 100 cfm gas powered compressor we got at an auction sale for 300 dollars.