Before performing a Diesel Particulate Filter regeneration, you should always:
* Check pressure sensors as there could be a build up of water.
* Examine pressure pipes for damage. They must be clean or they could freeze in extreme temperatures due to water build up.
* Check that the EGR system is working correctly.
* Check that the vehicle has the correct specification engine oil.
* Check the Eolys/Cerine additive (active system).
* When the DPF filter load reaches a pre-determined level, the ECU activates a regeneration process to increase the DPF temperature to over 550degC. The engine is set to run in a certain specific way and can inject up to eight times more fuel per stroke to produce a high amount of NO2, which will help oxidize the particulates, increasing the temperature as the exhaust gases pass through the catalytic converter.
* It is advisable to check the oil for diesel contamination as a result of constant DPF regeneration. If this occurs you must carry out a full oil change and replace the oil filter.
* The ECU must be readapted when replacing the DPF and when topping up the Eolys fuel additive.