Detroit engines getting DEF-derate update
From the Overdrive Staff Trucking news and briefs for Thursday, June 18, 2026: Daimler rolling out DEF derate update Daimler Trucks North America is rolling out software updates to more than 330,000 Detroit engines to meet the latest Environmental Protection Agency guidance on diesel exhaust fluid (DEF) inducements, or the timing of when DEF problems result […]