Know a lot of you are none believers that the japanese make better products then most. but hamp oil filter are known around the world. they are used in a lot of race applications. and at $9 a piece not bad on the wallet. found some here on ebay. not sure if any venders can get these but i have run these on my S2000 for years and ordered up some for the G

http://cgi.ebay.com/ebaymotors/5-HAM...Q5fAccessories