I am not trying to bash anyone. Just want to satisfy a curiosity. I have only heard negative things about 6.4s and when I was shopping for a diesel between the big 3 everyone said stay away from the Navistar unless it's a 7.3L engine. So why do so many still tolerate the 6.4 with all the issues. I just read the "Official 6.4 Guide" by @RandomForumGuy and man I came away with the feeling that he both loved and hated the thing. Kinda like the crazy one that you know you should let go but keep letting her back in. I mean people still buy them. So I want to hear from you guys why the truck remains popular...