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Illustration of exhaust aftertreatment system on an AI-inspired blue background and a green fuel pump nozzle in the foreground.

News•by Deborah Lockridge•June 15, 2026

New Agentic Predictive Maintenance Report Demonstrates How Degraded Aftertreatment Systems Waste Fuel

Questar analyzed a large mixed-class fleet and discovered it was wasting as much as $30 in fuel per vehicle, per day, because of mechanically degraded aftertreatment systems.

Articles•by David Cullen•May 17, 2021

Talking Diesel Aftertreatment Maintenance

Diesel aftertreatment systems remain the source of much confusion and frustration for fleets and drivers alike.

News•by Jim Park•January 5, 2021

Cummins Discontinues ReCon DPF Program

Cummins is discontinuing sale of its ReCon remanufactured diesel particulate filters, HDT has learned.

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New Chevron Engine Oil Reduces DPF Ash by 60%

Chevron says its new heavy-duty diesel engine oil is so effective at reducing DPF soot that exhaust systems could once again become hands-off maintenance items for some long-haul fleets.

News•by Staff•January 29, 2019

Denso Launches PowerEdge Brand for Heavy-Duty Trucks

Denso unveiled its new PowerEdge brand of starters, alternators, diesel particulate filters and diesel oxidation catalyst units for Class 8 trucks.