Ok here’s the deal. I have had 3 expeditions and one navigator. The 5.4 liter is best for towing. The preferred gear range is 3.73. Which did come stock on my 2014 EL king ranch. Tow package is definitely preferable as it has heavy duty sway bar, heavy rear shocks, trailer hitch with multi plug hookup and electric brake controller. Mine has 4x4 with a low range setting which is great for steep boat ramps or muddy camp grounds. Traction control is only a limited electronic helper that controls wheel spin. It is NOT a replacement for lock up or limited spin differential! For some reason for stopped putting in lock up rear ends in expedition. My 99, 2000, and 2001 all had it but my 2014 does not. However it can be added it. Ford makes the part or there is plenty of aftermarket products that are excellent. An electric lock up is preferable to me. Let’s look at what you really have without 4x4. You have only 2 traction wheels. If one looses grip then the computer cuts the engine power to eliminate the wheel spin. It does not apply power to the other wheel. So you really have one wheel drive.Anyone who has gotten stuck will tell you that to get the wheel to spin at all you have to turn off the traction control by the button on the dash. Traction control is designed to reign in the engine power on slippery roads so you don’t come around sideways by the rear end kicking out. Once you are sitting still and stuck it’s no help at all, actually it’s a hinderance and that’s why ford made a button to easily turn it off. It is in no way a replacement for 4x4 or a locking differential . Do yourself a big favor get a 4x4 expedition and have a locker put in the rear end. You will thank me for it, it’s a life saver.