Powerstroke 73, thanks again for the info I'll let him know about the K&N, this question is a little off the wall but if you remember I told you how I was sucking air into the engine for 2 weeks because of my fuel filter housing not seating completely, well now I am getting smoke (light blue) from the exhaust, and losing about 3 quarts of oil every two weeks (appears to be some leaking due to bad valve cover seals, but not 3 quarts worth). do you think I damaged some seals and if so which ones? thanks.