Click on the link and scroll down to look at the pictures of a cut open coolant filter after 6,000 miles. btw, the fellow that owns the truck that filter came off of, is a member here. He has an '03 6.0 powered Excursion with over 180,000 miles......and original EGR cooler.
http://www.dieselsite.com/index.asp?PageAction=VIEWPROD&ProdID=324
http://www.dieselsite.com/index.asp?PageAction=VIEWPROD&ProdID=324
