Diesel exhaust fluid (DEF) is essential for keeping modern diesel engines compliant with emissions laws and running efficiently. But ignoring your DEF tank or using poor-quality fluid can lead to limp ...

Diesel owners who have wrestled with warning lights, sudden power loss or even complete shutdowns tied to diesel exhaust fluid systems may finally be getting some relief. The U.S. Environmental ...

Most diesel truck owners understand how to put diesel exhaust fluid (DEF) in their trucks. However, some make the mistake of getting DEF in their fuel tank instead of the dedicated DEF tank. As the ...

We may receive a commission on purchases made from links. With the Environmental Protection Agency enacting stricter diesel engine emissions restrictions in 2010 and Volkswagen infamously getting ...

Diesel fuel has undoubtedly taken a lump or two over the last decade-and-a-half. But even Volkswagen's infamous "Dieselgate" scandal couldn't completely derail diesel engines as a viable, more ...

There is plenty of misinformation swirling around, so here is what you need to know to sort fact from fiction.

I recently read a pretty startling statistic—in the next year, the off-highway engine market will consume about 20 million gallons of Diesel Exhaust Fluid (DEF). In the next five years that number is ...