The Environmental Protection Agency on Tuesday announced a "fix" to "protect American farmers, truckers, and other diesel equipment operators from sudden speed and power losses caused by diesel ...

Diesel Exhaust Fluid (DEF) is a crucial component in modern diesel vehicles, introduced to comply with US Environmental Protection Agency (EPA) regulations that began in 2010. It's a solution made up ...

EPA approved guidance allowing diesel manufacturers to replace urea quality sensors with NOx sensors in DEF systems. The agency said faulty DEF sensors are a significant source of warranty claims and ...

On the heels of clarifying farmers’ right to repair their own equipment, EPA is escalating pressure on diesel engine manufacturers over ongoing Diesel Exhaust Fluid (DEF) system failures the ...

Duramax diesel truck owners are reporting widespread diesel exhaust fluid (DEF) tank-related failures that trigger warning messages, reduced engine power, and speed-limiting modes. Many cases involve ...

U.S. Environmental Protection Agency (EPA) Administrator Lee Zeldin on Tuesday urged engine and equipment manufacturers to revise system software to prevent sudden loss of power from engine derates ...

The U.S. Environmental Protection Agency on Friday said it is dropping the requirement for diesel exhaust fluid (DEF) sensors as part of a truck's aftertreatment system in favor of monitoring actual ...

The quality of the DEF going into your vehicle is as important as the quality of the engine oils or fuels used in your vehicles. When diesel-powered trucks sit idle for extended periods, it’s easy to ...

The data collected will allow EPA to independently evaluate ongoing system failures. As of Feb. 2, engine manufacturers have 30 days to provide EPA with data on model years 2016, 2019 and 2023 ...

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 ...