The feds aren't scrapping DEF altogether, but this could potentially address a large portion of emissions system failures.

A rare high-mileage Theta II teardown reveals how these engines actually fail over time, and it’s not as sudden as you might ...

E10 fuel contains 3% less energy than other low-grade petrols. This means if you swap regular unleaded for E10, you’d need ...

Here's what the "E15 Fuel Waiver" means, and everything you need to know about ethanol in gasoline to buy the right fuel for ...

Step inside the cleaning process as a sports car’s engine bay is pressure washed to remove accumulated grime. The video ...