Yeaaaah I don't understand how the question and the response are here? I would only put a K&N in on initial fire up of an engine that has some serious work recently done. Run that for 500miles. Then drain and re-fill with what I prefer, non synthetic. Then go with a standard good brand 3-4$ filter. NOW! If you have 15 large in the engine? I'd be running a K&N all day long! Still I think they and there air filters are over rated and f'n priceyWhat price did you buy？
I will second K&N oil filters being junk... My last two were leaking, as is the one I'm currently using. 10/10 would not recommend.K&N oil filters are junk. Some organisations won't even allow them on track cars because they're prone to failure.
WIX, Napa Gold, or Honda OEM are all good filters