I really want to get a superduty for the size of the cabin and for the power. I only plan on towing a few times a year but it will be a heavy load. My problem is my normal daily commute to work is about 4 miles one way. Will i kill the engine by doing this commute? On the weekends trips...

I have had two f150s and i am looking to get my first F250. I have my eye on a 2005 or 2006 crew cab 4x4 deisel. Are there any years I should stay away from or any specific problems i should look for? Any help would be great. I will be happy getiing back into a truck.