Add Yahoo as a preferred source to see more of our stories on Google. (Photo/Ram) Just two weeks ago, the head of the Environmental Protection Agency (EPA) made an extraordinary announcement: ...

These new regulations actually violate the EPA's requirements already on the books for diesel vehicles using DEF. From the EPA's own website, one such requirement is: Tamper Prevention System: The ...

Diesel owners who have wrestled with warning lights, sudden power loss or even complete shutdowns tied to diesel exhaust ...

Diesel exhaust fluid is essential for keeping your engine functioning without letting off too many emissions. But it doesn't do well in the cold; here's why.

DEF. I don’t think there is a more hated acronym in all of trucking. DOT even pales in comparison. Would you rather a CRA audit, or DEF issues? “Alex, I’ll take CRA audits for $1,000 please.” DEF, of ...