Originally posted by Duck
A Diesel Place boarder arranged for air filter tests on many major brands (except Fram-couldn't). Tests were performed on a very expensive test bench with two types of dust. The results are very interesting and a must read. If your in a hurry, read the first page, then go to page four.
http://dieselplace.com/forum/forum_p...642&PN=1&TPN=5
Great info. Thanks for the link.
OL