DPF and FAP: how to avoid replacement with the right maintenance

The particulate filter (FAP/DPF) is one of the most expensive components of the modern car. Replacement can cost between £700 and £1,800. Find out how to keep it in good health.

The problem with urban driving

Drivers who mainly travel in the city rarely exceed 60 km/h: the regeneration cycle never completes. The result: the filter clogs until the FAP warning light comes on and power is lost.

How to look after your FAP/DPF

1. Monthly motorway run: 30–40 km on the motorway every month
2. Preventive FAP additive: Pro-Tec DPF Super Clean lowers the temperature required for regeneration
3. Do not switch off the engine during active regeneration
4. Use oil certified “Low SAPS”

What to do when the FAP warning light is on

1. Add Pro-Tec DPF Super Clean to the fuel tank
2. Drive on a motorway for 30–40 minutes
3. If the light does not go off after 2–3 treatments, seek professional service