Posted on 8/29/2025

Diesel engines are known for their power, torque, and fuel efficiency, but they also produce more soot than gasoline engines. To keep harmful emissions in check, modern diesel vehicles use a Diesel Particulate Filter (DPF) to capture and store soot particles from the exhaust. Over time, this filter can become clogged, and ignoring it can result in expensive repairs and significant performance issues. Knowing what your DPF does, how it becomes clogged, and why prompt maintenance is so important can help you avoid a repair bill that runs into the thousands. What the DPF Does The DPF is located in the exhaust system and traps tiny soot particles before they can be released into the air. It stores these particles until they can be burned off in a process called regeneration. Regeneration occurs automatically when the exhaust temperature reaches a sufficiently high level, typically during sustained highway driving. If regeneration does not occur frequently enough, due t ... read more