If you manage a fleet of diesel vehicles that spend significant time idling, like school buses, trash trucks, utility trucks, or municipal vehicles, you could be facing a hidden engine killer: soot buildup in your after-treatment system (ATS). While idling may seem harmless, over time it creates conditions that accelerate soot and carbon accumulation in your EGR valve, cooler, turbocharger, …

If you’ve noticed your diesel truck or fleet vehicle isn’t running like it used to, you’re not alone. Power loss, poor acceleration, and sluggish performance are common issues for diesel engines — and one of the biggest culprits is soot and carbon buildup in the after-treatment system (ATS). But what exactly is the after-treatment system, and how can cleaning it …