International Leaders in DPF Cleaning


What are Diesel Particulate Filters (DPFs)?

Diesel Particulate Filters are the ceramic filters used to trap the particulate matter that you’ll find in the exhaust fumes of diesel vehicles. You can find out more on our Diesel Particulate Filters page.

Which vehicles require DPFs?

DPFs are used in cars, trucks, buses and non-road machinery. In Europe the first DPFs appeared in cars in 2001. Eventually all diesel cars will be required to be fitted with a DPF. Since 2007 all new US trucks have been fitted with DPFs as standard.

Why do DPFs require cleaning?

Soot and ash, which we refer to as particulate matter, gradually builds up in the DPF over time. While the soot can be removed automatically by a process known as regeneration, the ash builds up in the filter. Cleaning the DPF periodically removes the ash, prevents blockages and maintains performance.

How frequently should DPFs be cleaned?

How often DPFs need to be cleaned can depend upon how often a vehicle is used and what it is used for. You can get further guidance from the vehicle manufacturer on how frequently the DPF should be cleaned, but it generally varies from one to two years, depending on the usage of the vehicle. However, even DPFs fitted to vehicles that only do short trips at low speeds on a regular basis can become clogged within six months of being cleaned.

You’ll find that most vehicles are fitted with a warning light to tell you that it’s time to clean the DPF. The warning is usually triggered by an increase in back pressure from the exhaust as it struggles to expel the fumes.

How long will a DPF last?

A DPF should last as long as the vehicle under normal operating conditions, although it’s advisable to have it regularly serviced - provided it’s convenient to have the vehicle out of action.

How many times can a filter be cleaned?

A filter should typically withstand up to 10 cleaning operations - this could be as much as 2 million miles for well-maintained vehicles driving mostly at higher speeds on open roads.

In tests completed by Ceramex®, filters have been shown to withstand more than 10 cleaning cycles without any damage or detrimental impact on performance.


How does the Ceramex® DPF cleaning technology work?

The Xpurge® DPF cleaning process uses an innovative combination of water and air in order to clean all of the soot and ash that has accumulated in the filter. We have also developed special technologies to help dry the DPFs after they’ve been cleaned. Finally we use our patented Veritex® DPF inspection technology to check the condition of each DPF before they can be returned to the vehicle.

How much does it cost to clean a DPF?

The cost for cleaning a DPF can vary according each individual contract and the number of filters it covers. To find out more contact

What type of filters does Ceramex® clean?

We clean virtually all types of DPFs used in cars, vans, buses and trucks, as well as other heavy-duty vehicles and engines.