As for specs on the clean idle 6.6L V8 L5D turbodiesel Duramax engine, output ranges up to a maximum of 350 horsepower at 2,700 rpm and 700 pound-feet of torque at 1,600 rpm, all of which is ...

Certain vehicles, like buses and ambulances, are exempt from clean-air regulation. For 2011, the Ram 4500/5500 and Ford F-450/F-550 chassis cab trucks meet CARB’s strict requirements.

Special sticker should be displayed on trucks whose engines are idle-legal. ... Cummins customers can specify a 50-state Clean Idle Certified engine option when ordering a new vehicle.

California, for example, has Certified Clean Idle stickers. Earlier this month, a study was released showing that the black particles created by the burning of diesel and other fuels, ...