Playbook: Equipment, Maintenance & Tech

Adam Wingfield Thursday, July 9, 2026

PACCAR Is Raising the DEF Limp-Mode Speed From 5 MPH to 25 MPH. It Is Part of the Biggest Rollback of Diesel Emissions Enforcement in Years.

For any owner-operator who has ever been stranded on the shoulder of an interstate at 5 miles per hour because a sensor decided the diesel exhaust fluid system had a problem, the announcement PACCAR made on July 6, 2026 will read like overdue relief. The company is rolling out updated software for trucks equipped with […]

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Rob Carpenter Monday, July 6, 2026

The prosecution and the pardon that ended the diesel wars

On July 3, 2026, President Trump pardoned early a dozen people who were convicted under the Clean Air Act for tampering with diesel emissions, months after the Justice Department stopped prosecuting diesel cases entirely. The technology is still bolted to every truck on the road, and nobody in Washington wants to discuss the “what now” of who pays for it.

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Adam Wingfield Tuesday, May 19, 2026

Same Repair. Same Truck. Higher Invoice. Here Is the Number Behind What You Are Paying at the Parts Counter Right Now.

On October 17, 2025, President Trump signed a proclamation under Section 232 of the Trade Expansion Act of 1962, imposing a 25% tariff on imported medium and heavy-duty trucks and truck parts — Class 3 through Class 8 vehicles, engines, transmissions, tires, chassis components. It took effect November 1. For USMCA-compliant parts out of Mexico […]

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Adam Wingfield Wednesday, May 13, 2026

Nobody Is Asking the Hard Questions About What Happens When an Autonomous Truck Breaks Down on the Highway at 2 AM. Let Us Start.

This article is not an argument for or against autonomous trucks. It is not a prediction about what the freight market looks like in 2035, and it is not an endorsement of any technology company’s safety record or business model. It is a set of questions that the industry — carriers, drivers, regulators, first responders, […]

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