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 ...
Overdrive

Diesel ‘deleter’ doesn't trust EPA’s move to end DEF derates

It's been a busy few weeks for emissions regulations in trucking. The Department of Justice just backed off criminal prosecution of "diesel delete" cases. Days later, the Environmental Protection ...
Motor Trend

What Is DEF and How Does It Work?

Long-haul truckers and diesel engine enthusiasts had to rethink their entire operations in 2010 when the Environmental Protection Agency mandated selective catalytic reduction technology. Selective ...