I have a 2002 Jeep Grand Cherokee limited with 4.7l engine. 195,000 miles on it. It has a new jasper engine, rebuilt transfer case, many drivetrain repairs, etc. and an external transmission cooling system but otherwise still has original transmission. I want to buy a 4100 lb travel trailor but unsure if my vehicle is capable or to old to risk towing it. My tow weight is listed at 5000 lbs but RV dealer says my car is rated to 6000 lbs. the car is in great shape but am I asking too much of it?