DEF News Updates

GovernmentBusinessTechnologyEquipmentSafetyFuel

Nebraska Says Self-Repair Permitted on DEF Systems

Nebraska is asking truckers and farmers to report problems with DEF systems in order to hold manufacturers accountable for service issues, while telling consumers they have a right to self-repair.

February 10, 2026
GovernmentBusinessTechnologyEquipmentSafety

EPA Gives Engine Makers 30 Days to Provide DEF System Data

EPA Administrator Lee Zeldin is asking major diesel engine OEMs to provide critical data about diesel exhaust fluid system failures to remedy equipment problems for truckers and farmers.

February 3, 2026
GovernmentBusinessTechnologyEquipmentSafetyFuel

EPA to Curb DEF Shutdowns in New and Existing Trucks

“We have heard loud and clear from small businesses across the United States that the current DEF system is unacceptable," EPA Administrator Lee Zeldin said.

August 12, 2025
GovernmentBusinessTechnologyEquipmentFuel

Failing DEF Sensors Getting Software Fixes From OEMs

Software overrides for diesel exhaust fluid sensors that are in perilously short supply are making their way from truck manufacturers to repair shops, helping keep equipment on the road and prevent engine shutdowns that can leave a truck stranded when the sensors fail.

October 7, 2021
GovernmentBusinessTechnologyEquipmentFuelLogistics

Diesel Exhaust Fluid Sensor Failures Sideline Thousands of Trucks

Ongoing shortages of replacement parts for failed diesel exhaust fluid quality sensors are believed to be causing thousands of trucks nationwide to be disabled and parked.

September 9, 2021
BusinessFuel

Experts Warn of Spiking DEF Prices

Prices for the diesel exhaust fluid that is a vital component of emissions systems on newer trucks are rising as costs for urea — a core DEF ingredient — have jumped.

February 22, 2021
BusinessTechnologyFuel

Old World Industries Acquires Dasco’s DEF Business

Old World Industries announced it acquired Dasco Inc.’s diesel exhaust fluid and prilled [pellet] automotive-grade urea global business and assets.

November 1, 2019
BusinessFuelPerspective

Opinion: Ensuring Quality of Diesel Exhaust Fluid Can Help Keep Trucks Running Smoothly

Fleet managers and truck drivers both need to understand that the quality of the diesel exhaust fluid (DEF) going into their vehicles is as important as the quality of the engine oils or fuels used in their vehicles.

March 20, 2019
BusinessFuel

Love’s Offers Private Label DEF in Consumer Packaging

Love’s Travel Stops now offers its own private-label diesel exhaust fluid in a 2½-gallon container for auto diesel customers and professional truck drivers.

October 9, 2018
BusinessFuel

Musket Expands DEF Network With North Carolina Site

Musket Corp. announced it opened a diesel exhaust fluid wholesale bulk rack in Greensboro, N.C.

June 29, 2018

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