Took a good portion of my bike apart today for general maintenance and deep cleaning. When I looked in at the air filter through the inlet openings, the filter looks new. I have 10k on it. The air filter wasn't on my list but upon referencing the manual, it says 12k is replacement time. I didn't get one from Hal and want to wait. Gas mileage is fine. Have multiple bikes and use this bike only for trips. About 5k a year. When did you guys do yours? Thanks.