Diesel Exhaust Fluid helps reduce your vehicle's pollution, and it has to be refilled. If you only need a little at a time, ...

The short answer to why Diesel Exhaust Fluid doesn't work in the cold: It freezes at 12 degrees Fahrenheit. Comprised primarily of deionized water and urea, DEF serves to help make large diesel ...

Add Yahoo as a preferred source to see more of our stories on Google. DEF sensors will no longer be required following EPA policy. (Photo: Jim Allen\FreightWaves) Diesel Exhaust Fluid sensors will no ...

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 ...

No other vehicle has a good longevity reputation like the diesel pickup truck. Most owners believe their diesel is good for ...

Months after telling manufacturers traditional diesel exhaust fluid (DEF) sensors are no longer mandatory for new trucks, tractors, buses, and other diesel equipment, the Environmental Protection ...

Evan Williams is an automotive journalist and mechanical engineering technologist with more than a decade of experience in the industry. He has written for the Toronto Star and AutoTrader Canada and ...

Which diesel exhaust fluid is best? When you have a diesel vehicle, besides adding fuel, you need to add diesel exhaust fluid. Diesel-powered vehicles require diesel exhaust fluid to reduce engine ...

The federal agency is demanding failure and repair data from manufacturers to "hold [them] accountable for the continued system failures." The EPA announced this on Tuesday with a strongly worded ...

The 2027 Chevy Silverado and GMC Sierra 1500 Duramax models gain a larger DEF tank for extended towing range, but owners will ...

WASHINGTON – Today, U.S. Environmental Protection Agency (EPA) Administrator Lee Zeldin took another step to further the Trump EPA’s work to address widespread concerns from farmers, truckers, motor ...

GM increased the capacity of the diesel exhaust fluid reservoir in the 2027 Chevy Silverado and GMC Sierra, allowing drivers ...