Diesel enthusiasts’ interest in engine swaps is at an all-time high, spurred on by owners’ love of their aging vehicles and disenchantment with the performance of their factory-installed powerplants ...

What makes a diesel engine different to a regular gas engine, and is one better than the other?

Elizabeth Nelson, coolant program manager at Polaris Laboratories, a fluid-analysis company in Indianapolis, Ind., tells a story that would strike fear into the heart of any fleet manager. A class-8 ...