The polarizing 6.0 Liter Power Stroke was supposed to rise to the top of the segment, instead it's many problems caused its ...

Both Cummins and Ford offer 6.7-liter diesel engines. They share a few similarities, but those don't go much further than their displacements.

Over a year ago, Cummins agreed to pay $1.675 billion after the EPA found its 6.7-liter diesel engine let too much nitrogen ...