Information about Diesel Particulate Filter

Diesel particulate filters comprise of a ceramic compact material of a cellular structure with very small channels.

PARTICULATE FILTERS require more conservation than catalytic converters. During usage, the ceramic elements withhold metal elements and diesel particulates, which are gradually, through DPF’s passive regeneration are transformed into ash that blunt the filter’s wall pores. This ash, deriving from petrol burning, accumulates on the escape channels, which are made of silicon carbides or cordierite, and thus blocks the exhausts’ exit pores, resulting to a decrease on the engine’s horse power.


If your car’s warnings for the DPF’s partial blocking are not taken into consideration, you might need to replace it. Taking into account that this specific replacement costs from €1000 to €4000, then its conservation / cleaning is more profitable.

How they work
As the fumes enter the special filter’s chambers, they are blocked by the caps, placed on its upper and lower end. Finding no way out, they move towards the ceramic porous walls, which withhold the diesel particles, thus making emissions friendlier (even compared to gasoline engines) for our health and the environment. Furthermore, due to the heat developed, the particles are burnt and are subsequently emitted as carbon dioxide (CO2).
DPF sending and cleaning process:
Step 1:  Ask your mechanic to remove the particulate filter.

Step 2:   You pack it to be sent via courier or via mail.

Step 3:   You mail it to:

Fotios Nakos P.O. 57200
ADDRESS: Langadas Thessaloniki Greece
Mobile. 0030 6979 110885
Tel.0030 23940 24576



Bank Name: EFGBGRAA  (Eurobank)
IBAN: GR7402603760000650100064227


Step 4: We receive the particulate filter the next day and after we calculate the saturation levels, we begin the cleaning process that might take from 8 to 13 hours. After that, we return it to you for replace it on your car.


After you receive the particulate filter:

a. after cleaning, the soot levels will be between 0.2% and 1.2%
β. The cleaning stages are 8 or 9, and according to the levels of saturation of each filter, the way and level of cleaning of each filter is estimated, in order to operate perfectly.

The biggest problem for diesel cars  is the inability to desulphurize them. Cars with Euro V standards require a desulphurized Diesel to prevent the blocking of the DPF from sulphur remains, as in most E.U. countries.