Dodge eco diesel pickup??

Step son had one 2 years ago, he loved it but it leaked antifreeze and the dealer never could figure out why!! LOL So he trades it on 3/4 t Nisson diesel. Hates its mileage, gonna trade it off for??? He checks the reviews on the Dodge eco diesel now, and not good!!! Anyone with good opinion/info??
He is 27, he and wife make good $, he is an Ag teacher and drives 50 mi one way to work. The pickup is image for work?? ( IMO), he pulls a good size bass boat that a slant would haul to the lake 5 mi away and occasionally to a bigger lake 100 mi away. Being a tournament fisher guy is also about looking "good"??
His wife loves them running around on days off in the "truck". He would gladly get another eco diesel IF it did not have problems, and go to the friggin dealer every time you said squat and then they can not fix the damn thing!!
My opinion is buy a new decent whatever car to drive to work, and get a nice used truck for the boat hauling and shopping!!!