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Hot Diesel Particulate Filter (DPF) off a 2010 Mitsi Pajero.
What’s a DPF?
DPF (diesel particulate filter) is an exhaust based filter used to remove diesel particulate matter or soot from the exhaust gas of a diesel engine. As with any filter, a DPF needs to be maintained in order to function properly. A poorly operating DPF system is doing more bad than good. A blockage can cause restrictions in the exhaust, leading to back pressure and excessive heat which can cause expensive damage to other engine components. This will not only affect the performance of the vehicle, but also affect your vehicles fuel economy. Some modern DPF systems can use up to 2L per 100KM just to maintain a clean system, hence burning more fuel to reduce emissions.