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For diesel workhorses, cleaning out the DPF filter regularly helps keep the truck running clean, but a dirty DPF could severely impact performance.
Since 2007, all diesel vehicles in the U.S. have been required by law to have a DPF filter. It can clog up, but there are ways around that.
The diesel particulate filter is hardy, but it's not invulnerable. Here's how it gets clogged, how to regenerate it, and what can go sideways in the process.
For diesel workhorses, cleaning out the DPF filter regularly helps keep the truck running clean, but a dirty DPF could severely impact performance.