E-Mail Alerts - Low DEF? EPA Changes 'Limp-Mode' Rules

2 active user(s): Tandy Services, James Tandy

E-Mail Alerts - Low DEF? EPA Changes 'Limp-Mode' Rules

From Email:

HDTEquipmentReport@trucking.bobitenews.com

Cc:

Bcc:

Reply To:

emailsupport@bobit.com

Subject:

Low DEF? EPA Changes 'Limp-Mode' Rules

Date:

8/15/2025

Aug 15, 2025

EQUIPMENT REPORT

Illustration showing diesel exhaust fluid pump sign and EPA headquarters

EPA Acts to Curb Sudden DEF-Related Diesel Engine Derates

New guidance to engine manufacturers will reduce "derating," an automatic trigger forcing diesel engines to operate at a reduced capacity when the emissions system runs out of diesel exhaust fluid or there's a DEF-related fault.

Western Star's 2025 Star Nation event.

Skill Meets Technology at the 2025 Star Nation Experience

The Star Nation Experience from Western Star tests skill, showcases safety tech, and celebrates the backbone of vocational trucking.

Nominations for the 2025 Emerging Leaders awards close August 21. - Image: HDT Graphic

Don't Miss the Deadline to Nominate an HDT Emerging Leader!

If you, or someone you know, is under 40 years old, in a leadership position with a trucking fleet, and is making a significant impact in the trucking industry, submit a nomination for the Heavy Duty Trucking Emerging Leaders award. Deadline is August 21!

Graphic illustrating concept of California emissions regulations

Caught Between CARB and Washington: Truck Makers Push Back in Court

Truck OEMs say in a new lawsuit against the California Air Resources board that they are “caught in the crossfire” between the Trump administration and California regulators regarding conflicting emissions regulations.

ATRI: Trucking's Technician Shortage is Getting Worse

A new ATRI report reveals most diesel technicians enter the workforce without formal training, leaving shops to spend thousands on preparation. The findings outline key barriers, training gaps, and retention risks for fleets.

Brandon Tucker is responsible for ensuring S13 powertrains meet Traton global quality and consistency standards. - Image: HDT Graphic/International Photos

Q&A: International's Huntsville Powertrain Plant Sets its Sights on the Future

Heavy Duty Trucking's Jack Roberts sat down with Brandon Tucker, manager of International's Huntsville, Alabama, Powertrain Plant, to find out what is next for this world-class manufacturing facility.

Kenworth tractor-trailer.

Are Air Disc Brakes Worth It?

Air disc brakes are a hit with drivers, and they can be a hit with the bean counters and maintenance staff too as long as you don't get behind on the inspection intervals.

Used trucks for sale.

Used Trucks in a Time of Transition

Used truck buyers face older inventory, hesitant sellers, and economic headwinds. But understanding the trends could mean smarter decisions tomorrow.

3 Things to Know About Truck Tires and Summer Temperatures

There's no better time to prepare truck tires for summer heat than in the spring before those temperatures soar.

Read More

More Equipment News

Drums & Rotors Key Focus of CVSA’s Brake Safety Week

From Work Truck

TBC Expanding Offerings with Giti Tire

From Modern Tire Dealer

Workhorse Group and Motiv Electric Trucks to Merge

From Work Truck

Trucking Info

You are currently subscribed as news@tandyservices.com.

Bobit Business Media Inc, PO Box 2703, Torrance, CA 90509

|

|