Oil in the DPF or DOC: Why an Oil-Soaked Filter Must Be Replaced, Not Cleaned

Published on: 16/10/2026

Found engine oil in your DPF or DOC? Learn why an oil-soaked filter must be replaced, not cleaned, and where the oil usually comes from.

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DPF Clogged Again Right After Cleaning? 6 Engine-Side Causes to Check

Published on: 16/10/2026

A clean DPF that plugs again in days usually has an engine-side cause. What the deposits inside the filter tell you, and what to fix first.

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