The California Air Resources Board has approved for 2027 what the Engine Manufacturers Association refers to as “sweeping new regulations affecting heavy-duty trucks sold in the state.” The regs ...

We’ve reported on a lot of innovative diesel parts, concepts, and theories that have been introduced in the last decade, with various engine blocks, cylinder heads, turbochargers, and injection ...

Gasoline and diesel engines feature many differences aside from fuel type. Compared to gasoline engines, a diesel is typically a lower-revving, torquier design, hence why it's often preferred over ...

Cummins released details of its 2027 X15 diesel engine, which it says meets EPA 2027 emissions requirements while improving fuel economy — and without adding weight or using more diesel exhaust fluid.

Perhaps one of the most overlooked items of diesel truck maintenance involves the various fluids that are the lifeblood of these vehicles. Proper maintenance of oil, coolant, transmission fluid, and ...

Superior Air Parts is developing the Gemini 100, a 100-horsepower diesel aircraft engine aimed at competing with the Rotax 912. Based on a British design, the Gemini 100 is a lightweight, 3-cylinder, ...

Finnish manufacturer Wärtsilä introduced an engine back in 2015 that was so good, it snagged a Guinness World Records title for being the most efficient four-stroke diesel engine shortly after its ...

ROCHESTER, N.Y. – As businesses, school districts, cities and power companies all signal they’re not ready for the state’s forced transition to zero emission trucks and buses, one local company says ...