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Mac, VTNA set up DEF DeRate software update schedule
Trucks

Mac, VTNA set up DEF DeRate software update schedule

July 27, 2026 2:56 pm, EDT Mack launches a revival of Anthem in June 2025. (Mack Trucks) key takeaways: Volvo Trucks North America and Mack Trucks said July 27 that they have begun incorporating the revised EPA DEF induction software into new trucks produced starting in May. Following EPA guidance issued in August 2025, the

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Packer, Cummins release DEF Derate software update
Trucks

Packer, Cummins release DEF Derate software update

A Packer MX-13 engine. The parent company of Kenworth and Peterbilt will introduce updated software for vehicles equipped with MX-11 and MX-13 engines. (Packer Inc.) July 7, 2026 5:50 pm, EDT key takeaways: The EPA guidance increases the final spur speed by 5 mph to 25 mph and extends the timeline for addressing emissions system

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