If you drive a diesel car or van, you’ve probably heard of a Diesel Particulate Filter (DPF) – but what does it actually do, and why does it need cleaning?
What Is a DPF?
A DPF is a component in your vehicle’s exhaust system that captures and stores soot particles produced during diesel combustion. Its main purpose is to reduce harmful emissions and help your vehicle meet environmental standards.
To keep itself clean, the DPF goes through a process called regeneration, where the trapped soot is burned off at high temperatures. This usually happens automatically during longer drives when the engine gets hot enough.
Why Do DPFs Get Blocked?
Problems can arise when regeneration doesn’t happen often enough – usually due to frequent short trips, stop-start driving, or engine issues. Over time, soot and ash build up in the filter, reducing its efficiency and potentially triggering warning lights or performance issues.
Common signs of a blocked DPF include:
- A warning light on the dashboard
- Reduced engine power or sluggish acceleration
- Increased fuel consumption
- The engine entering “limp mode”
- A strong smell from the exhaust
What Does DPF Cleaning Involve?
When a DPF becomes too blocked for regeneration to handle, it needs to be professionally cleaned. This involves removing the filter and using a specialised cleaning machine to flush out soot and ash using a combination of pressure, heat, and cleaning agents.
This process can restore the DPF to near-new condition, helping to:
- Improve fuel efficiency
- Restore engine performance
- Extend the life of the DPF and engine
- Avoid costly replacements
When Should You Consider DPF Cleaning?
If your vehicle is showing any of the signs above, or if you regularly drive short distances, it may be worth having your DPF checked. Even if there are no obvious issues, routine maintenance can help prevent problems before they start.
At Gavin Fleet Care, we’ve recently invested in a new DPF cleaning system to support our customers with this essential service. If you have questions about your DPF or think it might need attention, we’re happy to advise.
Call us now or drop us a message to book your DPF clean today!
