Don't let your expierience with the 6.0 turn you away from all diesels. You have to consider that you own arguably one of the worst, if not the worst diesel engine ever made. Not saying this is insult you or anything, but there is simply no way to sugercoat how bad the 6.0's are.Just got the word yesterday that my 07 6.0 Leaker has the dreaded bedplate leak, and it's a bad one! They have to pull the engine and only then can they tell if they can fix this one or have to order a new engine. Good grief, I thought that by the time they built my engine all these issues had been worked out and fixed. I was wrong. Add to this mileage swings from 4.5 to a high of 9.8 and this will absolutly be the last diesel I will ever own!! I'm going back to gas!
In fullsize trucks both the duramax and cummins have been proven long lasting and reliable especially with good maintence and better then stock filtration.