The EPA questions if diesel DEF de-rates are essential for emissions compliance. Could changes be on the horizon? Discover ...

The EPA is considering eliminating the "limp mode" rule for diesel engines, a feature that drastically slows trucks and ...

The EPA is escalating its response to consumer complaints regarding DEF system failures, announcing a new investigation aimed ...

The Trump administration has announced it will no longer criminally prosecute “diesel delete” cases of truck owners altering ...

The Environmental Protection Agency is requiring 14 major diesel engine manufacturers to provide detailed information about ...

The federal agency is demanding failure and repair data from manufacturers to "hold [them] accountable for the continued system failures." ...

Flo-Pro Performance Exhaust and its distributor Thunder Diesel & Performance are facing fines of $1.6 million in relation to a 2018 EPA investigation into the companies’ alleged violation of the Clean ...

“Clearing the Air: Understanding the Dangers of Diesel Exhaust in the Fire Service” will take place on April 3, 2025, at 12 p.m. EST. This free webinar will take place on Thursday, April 3, 2025 at ...

A well-running and adequately maintained diesel engine should produce no visible smoke from the tailpipe. Modern diesel engines equipped with common-rail direct-injection technology have unlocked more ...

Diesel exhaust poses a significant health risk, contributing to respiratory illnesses, cardiovascular diseases, and even cancer. The World Health Organization has classified diesel exhaust as a Group ...

The U.S. could soon experience a severe shortage of diesel exhaust fluid (DEF), impacting U.S. drivers already hit with soaring fuel prices. DEF is a solution made up of urea and de-ionized water that ...

Since 2010, diesel-powered on-highway trucks in North America have been using selective catalytic reduction (SCR) as an exhaust after-treatment technique to control nitrogen-oxide (NOx) emissions. And ...