One of the other threads mentioned needing to drive in 4-hi monthly to keep things lubed up. Anyway, today I did (only the second time in my 4 months), and for the recommended 10 miles.
I noticed real quick that the steering really resists turning, especially right turns. Popping it back into 2-H and the steering is back to what I'm used to.
Is this normal? I don't recall my Explorer doing this in 4-hi or 4-lo.