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 […] The post PACCAR Is Raising the DEF Limp-Mode Speed From 5 MPH to 25 MP Read full article →