2007 Audi A3 2.0 TDI (DPF) Sportback - Car Photo and Specs (Clarence Vaughn) Removal is considerably more cost effective than replacement, and its a permanent fix. The DPF or diesel particulate filter is fitted in the exhaust and catches soot and other diesel particulates, these filters have to go through a regeneration every once in a while which is controlled by the ECU, this usually happens when the vehicle is on the motorway. However, using biodiesel has three main problems.
The newer common rail TDI engines (CRD) in VW Jetta TDI or other models with DPF will run as well on biodiesel as older TDI engines ran fine on biodiesel.
I cannot see any DPF light on the dash when i turn the ignition.
The DPF or diesel particulate filter is fitted in the exhaust and catches soot and other diesel particulates, these filters have to go through a regeneration every once in a while which is controlled by the ECU, this usually happens when the vehicle is on the motorway. This is the new sound of the exhaust. Particulates are what makes diesel exhaust black and sooty.
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