Today, I put the explorer in the air, the 4 wheels lifted
Engaged the 4 hi, gear in 1, all wheels moving....
Engaged the 4 low, gear in 1, all wheels moving fine also... WTF!!
We take the explorer to a unpaved road
4x2 and full gas, the rear tires slip a lot
4x4 HI + full gas, the truck out...