IN THE BAY Look upstream to DPF DOWNT REDUCE As frustrating as DPF regen issues can be, technicians should recognize that the DPF is typically the victim, not the villain. By Gregg Wartgow [ POWERTRAIN ] T he diesel particulate filter (DPF) and other aftertreatment system (ATS) components have greatly improved over the last 10 years. Still, DPF-related issues continue to cause headaches for fleets. " A fleet will never get the longevity out of an early ATS (2007-2015) like it will with today's systems, " said Bruce Balfour, vice president of Clean Diesel Specialists (CDS), a diesel emissions service and equipment company. " And when it comes to newer vehicles and achieving the really extended cleaning intervals talked about today, it's all about the vehicle's duty cycle and any upstream problems the engine has. " ยป Roadwarrior has been manufacturing direct-fit diesel particulate filters at its facility in Canada since 2011. Photo: Roadwarrior Inc. 12 Fleet Maintenance | February 2022