Thanks for the reply, I have a buddy that just b ought a 2007 2500hd (6.7) and it has a few oil leaks ( one at back of motor dripping out of flywheel cover and one around the injector pump area ) cant see them very well. I just thought it would be good to have a copy of the cd . I just wanted to make sure it had the info before I told him to buy it. I have not had a lot of time to search this site yet. I am looking forward to sucking up as much knowledge as I can. Hopefully I can give some back as well. Thanks again.