Just bought a 2016 Ram a couple weeks ago...my first truck and first diesel vehicle ever. Has 54k miles with a 6" lift, with 35" tires. Clean car fax, but no maintenance history beyond state inspections. Can I tow safely (6k pound camper) since truck doesn't have any kind air suspension or anything? 3.55 ratio. Any tips you can provide on diesel maintenance, recalls, etc. would be appreciated. I purchased from an independent dealer, and plan to have it checked out by the dealership this week. Truck is in such great shape, I am concerned why someone would get rid of it.