For whatever the heck its worth, I just finally took out and cleaned the Amsoil filters in both my trucks after 2 years use w/ no cleaning since new. There didn't appear to be any dust in the intake as I had noticed after using the K&N (or excess oil either). <img border="0" title="" alt="[Smile]" src="images/icons/smile.gif" />

Cleaning and reoiling the filters was kind of a pain, but if I only have to worry about them every 2 years or so, I'd say its probably time and money well spent for me...

'97 4Runner, '06 F350, '86 4Runner, '05 WR450
http://home.4x4wire.com/erik