Expedition 4x4 capability
I can't find a salesman who knows the answer. In 4-wheel low setting - does the Expedition have a locking rear differential - so that the two rear and one front wheel spins (like the Tahoe)? Is a locking rear differential even an option on the Ford?
My understanding is that 4-wheel High is really 2-wheel drive (one front, one rear). On the Tahoe it is the same. But - if you have the optional rear locking differential - when you shift to 4-wheel low - ther rear axle automatically locks - so that BOTH rear wheels and one of the front spins. That option has gotten me out of trouble many times in off-road situations - when you really need as many wheels spinning at the same time as possible. Too bad you can't lock the front axle as well - like on the old Jeeps.
Does the Expedition have a similar option? All I see is a "standard rear" axle (and I don't know what "standard" really means) and they have a "limited-slip" optional differential? What's the difference between the two? Is there any way to spin 3 of the 4 wheels simultaneously?? Or - should I stick with a Tahoe?