You can know next to nothing about passenger cars and still realize that you should never pump your Honda or Hyundai full of diesel fuel. That’s because most commercial sedans run on gasoline; diesel ...

Volvo Trucks has introduced a new generation of its I-Roll technology. The upgrades adds new engine stop/start functionality. Volvo said the technology is a world first in the heavy-duty truck ...

Any certified gearhead knows that diesel engines do not use spark plugs. But why not? If power in an engine is created by combustion or explosion of flammable liquids, won't a spark plug in a diesel ...

Why are diesel engines susceptible to injector deposits? How do injector deposits affect engine performance characteristics? With regards to deposits, ExxonMobil has developed Synergy Diesel Efficient ...

Daimler Truck executives signaled a renewed focus on diesel powertrains at the company’s Capital Market Day 2025. Senior leaders at the world’s biggest truck maker, including Daimler Truck North ...

While diesel-powered passenger cars were quite successful in Europe and other parts of the world, they didn't quite catch on in the US. For decades, diesel engines were predominantly present in trucks ...

Diesel-powered trucks date back to 1923 when one of Karl Benz' early companies — Benz & Cie — installed a four-cylinder, 45-horsepower unit in a 5K3 truck chassis. It proved to be a winning ...

But the big reveal was the next generation of its more than 40-year-old B-Series power platform with a new 7.2-liter diesel engine for 2027—the same year that the Environmental Protection Agency’s ...

Hill Work Train Crew working with the yard sweeper inside Cascade Tunnel, Wash., on July 1985 included, from left, Brakeman Jack Maki, Engineer Steve Goldstein, and the author. The photograph was ...

New EPA 2027 emissions rules also mean new diesel engine oil specs. A new generation of heavy-duty engine oils will feature lower viscosity, improved thermal resistance, and possibly longer oil drain ...

Michael Leamy receives funding from the National Science Foundation, the Department of Energy, General Motors, and other government agencies and corporations. Gasoline fuels most light-duty vehicles, ...

The U.S. EPA announced the recipients of nearly $125 million for its Diesel Emissions Reduction Act National Grants Program. Municipalities, tribes, and other organizations received anywhere from ...