
EPA Extends DEF Derate Grace Period to 650 Miles, 25 mph Floor
New EPA guidance gives fleets 650 miles of warning-only operation after a DEF fault, then 4,200 miles at 15% derate before speed drops to 25 mph. Software…
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New EPA guidance gives fleets 650 miles of warning-only operation after a DEF fault, then 4,200 miles at 15% derate before speed drops to 25 mph. Software…

New website consolidates technical fact sheets, webinars, and policy guidance on selective catalytic reduction and diesel exhaust fluid systems for fleets…

Fleet Advantage warns operators to budget for elevated pricing as OEMs phase in EPA 2027 NOx hardware ahead of the regulatory deadline.
VTNA's updated D13 meets the 2027 nitrogen oxide rule. What the compliance package means for service intervals, aftertreatment, and shop tooling.
Mack's MP13 meets EPA's 2027 NOx standard: the first look at what the regulation means for hardware.
White House extends shipping waiver for oil, fuel, and fertilizer through mid-July. Tanker fleets unaffected; no equipment mandate changes.