Nissan's Pro-4X versions of the Frontier and Armada may not be as refined as rivals, but they have a secret weapon off-road.

The revised turbo-diesel 6.7-liter inline-six engine is quite the stump puller. Cummins reworked the block, cylinder head, glow plugs and turbo; it also added bigger valves, a higher-pressure ...

After hours: March 26 at 7:31:33 PM EDT Loading Chart for AXL ...