Hello all, recently I’ve been checking out a 2018 Bighorn ED with 6,500 miles on it. The dealership is selling it for around 30K. I do have some experience with diesels as I currently own a 14 Vw TDI. The dealership this truck happens to be at is a Nissan dealership. Is there any thing I should be on the lookout for that could warn me as to if this is a bad buy?