I don't want to sound disrespectful here, but there are 2 main points in response to this post:
1. Take your questions/concerns to another forum. You can you use the one suggested by spud1957 or select any other forum that pertains specifically to diesel trucks. I personally prefer www.powerstroke.org, but that's just me. You will be far better off to ask questions there vs. a RV forum.
2. If you insist on using this forum to ask your questions like this, then please first use the "SEARCH" feature. Threads pertaining to the 6.0L PSD have been the most well-beaten horse that I've seen in my short time here. Usually, after MANY pages of pissing and moaning by haters and lovers, the OP isn't any better off than they were when they asked the question. As recently as the last few weeks, there was a long drawn out argument on this very topic.