Old diesel engines from various car manufacturers like Mercedes and Volkswagen are highly prized even in modern times. Not only were these engines incredibly reliable and mechanically simple, but they ...

NACFE’s Run on Less—Messy Middle showed top diesel fleets reaching 11.6 mpg through data-driven efficiency and disciplined operations. The study confirmed trucking’s shift toward purpose-built ...

A technology from Caterpillar combines natural gas and diesel, resulting in an engine that provides the low emissions of natural gas, without giving up A technology from Caterpillar combines natural ...

The 2026 Ram Diesel Power Wagon returns with the high-output Cummins diesel, higher tow ratings, and no factory winch due to ...

The engines that power the vehicles we drive are exceptional machines. They're capable of generating insane amounts of power in a relatively confined space, and they can generally be expected to ...

Water injection is a tried-and-true method for cleaning up the combustion process in a diesel engine. It reduces both combustion temperatures and the resulting particular emissions. But what if you ...

The University of Massachusetts Amherst’s central heating plant typically runs on liquefied natural gas and ultra-low-sulfur diesel, but has begun using “renewable diesel” on especially cold days when ...

Because diesel vehicles do not use spark plugs, they must rely on higher compression ratios to ignite the diesel fuel without ...