Modern medium- and heavy-duty trucks have sophisticated exhaust aftertreatment systems that can include a diesel oxidation catalyst (DOC), diesel particulate filter (DPF) and selective catalytic ...

Key to the care and feeding of today's latest engines is a mysterious fluid called DEF (diesel exhaust fluid). Following is some information about DEF to help you manage your Tier 4 equipment for ...

We appear to be learning from our mistakes in aftertreatment system maintenance, but we still have a way to go before we’re at peace with the things. Strictly speaking, diesel particulate filters, ...

Selective Catalytic Reduction technology that will be used in many 2010 diesels will require additional maintenance around the DEF filters. As fleet managers have worked to familiarize themselves with ...