I am considering getting a new used work truck and have been bit with the diesel bug. I drive about 40-50k per year. My Titan is almost at 250k so she's been good but almost time to put her out to pasture. I am hoping the brain trust that is BITOG can help me out. I know enough about diesel to be dangerous, but not enough to make any decisions. I know to avoid the Powerstroke 6.0, so that's out. The older PS 7.4 seems to have a great reputation and almost bulletproof if taken care of. I have never had a Chrysler product. Duramax...all I know is a friend has one and has had no complaints other than the exhaust fluid. What are the major pros and cons of each? If anyone has any input good, bad, or otherwise, it would be appreciated. What are the general diesel maintenance issues that are not present with gas engines? I'm basically looking at used 4 door trucks with under 150k on the engine. Thanks for any replies.