[Armada]

Originally Posted by sammy sandbag

He could very well have manual hubs out front, not an uncommon thing, especially on off-road built vehicles. But manual hubs have nothing to do with traction aid, they simply save wear and tear on drive line components, make the vehicle more street-able, and let you limp out of situations like broken axle shafts, u-joints, and differentials.

Good summary. Said it better and briefer than my try.