Variable geometry turbos promise better boost and efficiency, but do all Cummins engines include them? Dive into the tech and ...

Since then, through years of repair work and hands-on ownership, I've worked on and maintained dozens of turbo-diesel engines -- and I've seen firsthand how long they can last with proper care ...

Mitsubishi Motors is a pioneer of many things in the automotive industry, including some of the first production direct injection diesel engines, or DI-D.