Just a short time after reducing regulations regarding fuel and exhaust systems around diesel engines, the EPA seems to be ...

The Environmental Protection Agency is requiring 14 major diesel engine manufacturers to provide detailed information about diesel exhaust fluid system failures that have affected farmers and truckers ...

Add Yahoo as a preferred source to see more of our stories on Google. U.S. Environmental Protection Agency Administrator Lee Zeldin was at the Iowa State Fair Aug. 12, 2025 with U.S. Small Business ...

Mack Trucks and Volvo Trucks are expanding the availability of updated diesel exhaust fluid (DEF) inducement software across ...

If you regularly drive a modern-day diesel-powered vehicle, chances are, you know what Diesel Exhaust Fluid (DEF) is. A crucial component used by most modern vehicles with diesel engines, DEF — which ...

The Environmental Protection Agency is asking diesel engine makers to provide information about diesel exhaust fluid system failures as it considers changes to emissions regulations. The move is a ...

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 ...

The updated software gives Mack and Volvo truck owners more time to address DEF-related issues before the engine derates or ...

I had owned gas trucks my entire life before buying a 2023 Chevrolet Silverado 1500 High Country with the 3.0L LZ0 Duramax ...

Congress is fast-tracking a bipartisan DEF relief bill. The half in the press release stops trucks from derating to 5 mph over a false sensor code. The half you have to read the text to find suspends ...

DES MOINES, Iowa (IOWA CAPITAL DISPATCH) - U.S. Environmental Protection Agency Administrator Lee Zeldin announced guidance Tuesday for engine and equipment manufacturers to prevent sudden shutdowns ...