Take a look under the hood of some cars, and you may be downright startled at the age of the powerplant running the thing. For instance, an evolution of the Cummins B-Series diesel, launched in 1984, ...

There are enginesthat make headlines, engines that win championships, and engines that get plastered across the garages of diehard gearheads. And then there are the quiet workhorses. The engines that ...