I found another test that shows how lousy the el-cheapo Frams are.....but also shows that the higher quality Fram Xtended Guard is one of the best filters out there.

http://www.gmtruckcentral.com/articl...gradesheet.htm

POS Fram
http://www.gmtruckcentral.com/articl...ilter/ph5.html

Good Fram
http://www.gmtruckcentral.com/articl...ilter/Xg5.html

Pretty cool list of the after filter showing how much dirt got by the oil filter. The $8 Fram is #3 which is pretty good!
http://www.gmtruckcentral.com/articl...omparison.html

He actually rates the AC Delco, STP, and Shell filters as much worse than the Fram!