From my research the K&N filter is "low grade media with nut welded to bottom" Pure One PL 14612 is very good recommended filter. You can get it on Amazon.com two for $9.88. Also I use Motul 5100 Ester 15W-50 $31 a gallon, TBA has 20,000 miles never has any problems. I change oil every 5000 miles.
http://www.amazon.com/OIL-5100-15W50-4TB...5127&sr=1-5
http://www.amazon.com/s/ref=nb_ss_auto/0...o.y=7&Go=Go