New EPA Proposal Could Roll Back Some DEF-System Requirements For Diesel Engines

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

EPA Wants To Remove Limp Mode For Diesel Trucks With Broken DEF Systems

The Environmental Protection Agency wants to change how diesel trucks respond when their emissions equipment runs out of ...
Pickup Truck +SUV Talk on MSN

EPA rolls back DEF rules after months of diesel delete buzz: Here’s what actually changed

For months, diesel truck owners have wondered whether the Trump administration would dramatically roll back EPA emissions ...
Agri-Pulse

Proposed EPA rule seeks to end DEF deratements

The Environmental Protection Agency plans to stop requiring that diesel trucks automatically reduce power when their emissions exceed certain limits under a proposed rule that would also do away with ...
EV Smarts on MSN

The EPA is proposing to remove a diesel truck feature that sparked years of controversy

The U.S. Environmental Protection Agency has proposed major changes to heavy-duty engine emissions regulations, saying the ...

Paccar begins software updates after EPA revises DEF inducement guidance

Paccar will begin to update the software on trucks equipped with MX-11 and MX-13 engines following the Environmental ...
Jalopnik

EPA Says We Don't Really Need 'Low DEF' Limp Mode In Trucks After All

These new regulations actually violate the EPA's requirements already on the books for diesel vehicles using DEF. From the EPA's own website, one such requirement is: Tamper Prevention System: The ...
Truckinginfo

EPA Wants to Know: Are DEF De-Rates Really Needed for Diesel Emissions Compliance?

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 ...
Transport Topics

EPA proposes end to DEF derates to mixed reception

EPA has proposed ending diesel exhaust fluid-related engine derates, replacing the gradual dialing back of truck performance ...
Opinion

The DEF Act is half relief bill, half noise

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 ...
Opinion

DEF Technology Remains Essential Part of Emissions Compliance Strategy - Premature Intervention Could Disrupt Thoughtful EPA Guidance

NATSO, representing truck stops and travel centers, and SIGMA: America's Leading Fuel Marketers, questioned the Environmental Protection Agency's (EPA's) proposal to fundamentally alter the regulatory ...