The 3.0L Turbo Diesel

Hello everyone I am looking for a truck for work. I have been looking at the 3.0L as it gets over the city mileage I need to get 100% gas reimbursement from work. I will be driving it roughly 4-6 hours per day due to my territory being a bit farther from where I am located. Has anyone ever had issues with the 3.0L, is there anything I should be concerned about, and if you have loved it is it worth the money? Thanks for the help in advance!