As you know those starions are Dodo rare around here.
Above the B? Are you talking the two way graded bulevard that goes up to the top? Or the Jeep trail that branches off half way up and does not go very far? I don't recall any thing above the B that even requiers 4x4. Once the snow starts flying I like to head out to the west desert Knolls area.

99 Montero....15mpg! Sold (so sad)
02 Jetta TDI....48mpg!
03 2500 Ram QCLB Cummins....18mpg
02 2500 Yukon XL, We out grew the montero, at least it has one locker.....13mpg (sold)
01 montero limited