I'm posting to the guides section since this isn't a question--it's more of a cautionary tale.
Some may remember that I bought my 2006 last summer and rode it home to BC from Texas--2,600 miles or so. I was due to be in the neighbourhood (New Mexico) anyway, so when I saw the flawless 2006 with factory hard bags and just 4,300 miles in Texas, I jumped. The bike performed flawlessly on the ride home. The only glitches were a flat, and some numbness in the throttle hand (probably due to poor sport bike technique).
I bought a set of PR2CTs and changed the oil and filter last season, but otherwise didn't do any maintenance. I have a couple of longer rides planned for next month, so I've been slowly checking some of the other maintenance items. Today I finally decided to check the air filter. The bike was so clean I was hardly expecting the filter to be dirty, let alone to look like this:
And this:
Needless to say I was shocked to find this in my otherwise spotless bike!
All the "furry" stuff on top of the filter appeared to be wool of some kind (a chewed up glove?), and along with the "liquid" stains (and smell ...) were hundreds of small seeds in the folds of the filter material. Since I've never seen any mice around my place (in the city) and the place where I bought the bike was in rural Texas (deer wandered through the owner's yard while I was there), I'm guessing that this mess has been in there since before I bought the bike. Remarkable that I still got nearly 47 mpg on the way home!
Also remarkable is how well the filter worked. This is the filter housing, untouched, as I found it underneath that Hantavirus-infested mess:
Given that, I decided to replace it with another OEM. Not cheap though, I found one locally for $60. It looks to be about $10 less online, but I wanted to get back on the road ASAP. I had to fend off several attempts to sell me a K&N for $70+ that will "last forever," but I've read that they might not filter as well as the OEM and clearly this incident is nothing if not a testament to how well the OEM works. I suspect if it hadn't been for my uninvited guest, the OEM would have still been fine--like the new one:
The moral of the story? Check your air filter! Clearly my bike was a garage queen in its previous life (only 4,300 miles in four years), giving rodents plenty of opportunity to take up residence.