Scientists are exploring a surprisingly simple way to clean up diesel engines: adding tiny droplets of water to the fuel.

While the list of car brands that still use diesel engines in 2025 is increasingly small, diesel still dominates when it comes to heavy-duty trucks. There are a number of reasons why diesels are the ...

Most people pump diesel without thinking about what's in the nozzle, but the stuff has a long journey before it hits your fuel tank. Diesel doesn't magically come out from underground — it's ...

2027 heavy-duty engines are still a couple of years away. But the American Petroleum Institution is already hard at work on the next generation of oils that will lubricate them. New EPA 2027 emissions ...

Explore the 2027 Cummins X15 diesel engine, delivering up to 605 hp and 2,050 lb-ft of torque. Learn how the new 48V ...

We put the Mahindra XUV 7XO diesel automatic through our instrumented real-world fuel efficiency test. Tap here to know about ...

Like any other stored commodity, diesel fuel deteriorates with time, especially if it is kept motionless in tanks used for fleet systems, marine engines, or backup generators. Recognizing bad diesel ...