These hulking diesel engines power the economy with massive torque, hundreds of horsepower, and hard-driving reliability.

Some even push beyond that limit with proper care and quality parts. The longevity of a semi-truck engine depends on factors like routine engine maintenance, driving conditions, and engine type ...

As a diesel owner, I know the hectic heartbreak of trying to keep such an unpopular drivetrain up and running in the U.S. Most people think of big semi trucks ... their loud engines and stinky ...