Introduction
Diesel regeneration (DPF regen) is the process of burning soot trapped in the diesel particulate filter. Without regen, the filter clogs and the truck goes into limp mode.
Types of Regeneration
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Passive Regeneration – Happens automatically at highway speeds.
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Active Regeneration – The truck injects extra fuel to raise exhaust temps.
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Forced Regeneration – Done manually with diagnostic software.
Freightliner DPF Regeneration
Freightliner trucks often require forced regen if normal cycles fail. Mechanics use laptops with diagnostic software to perform this.
Diesel DPF Cleaner Options
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Fuel additives labeled as diesel DPF cleaner
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Shop cleaning services for a removed DPF
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Manual regen using laptops
👉 Get a diagnostic laptop with DPF regen capability for complete control.