Back in the early days, diesel engines were for trucks, tractors, and stationary applications. They were deemed too heavy, too complicated, and too unrefined to be fitted onto a road car. Well-known ...

Home mechanics have been pouring vegetable oil into engines for years, sometimes in the fuel tank, sometimes straight into the crankcase, and often with a camera rolling. The appeal is obvious: a ...

WILLIAMS, AZ (AZFamily)—Steam engine 4960 is special not only because it’s one of about 200 steam engines in operation in the U.S. but also because it’s the only steam engine that completely runs on ...

Audi, like the rest of the Volkswagen Group, is looking to become carbon neutral by 2050. That mostly means developing electric vehicles but it doesn’t preclude taking smaller, shorter-term steps to ...

Biofuels have grown increasingly popular in recent years as a way to reduce emissions when it comes to both transport and heating. In the UK, around 1.7 million homes still rely on kerosene heaters, ...