The S58 inline-6 engine in the BMW M2, M3, and M4 has been around for more than a decade, but it still puts out enough power with enough efficiency to stay relevant on the modern performance car ...

The demands placed on modern aircraft engines are high. They need to be powerful. And efficient. And, of course, as low in emissions as possible. To master this balancing act, Rolls-Royce is driving ...

You've seen the evidence. You disassemble an engine and witness the appearance of deposits—or their absence—on piston crowns and combustion chambers in the cylinder heads. You can relate the presence, ...