Cleaning your DPF should be done when suggested by the manufacturer. Neglect of cleaning your filter will lead to “regeneration” too frequently, causing you to lose miles per gallon or power. Filter regeneration is the process by which the filter removes diesel particulate matter from the exhaust gas and burns off the matter. This process occurs at highway speeds above 40mph. Your filter will become saturated during normal use causing it to regenerate too often. Vehicles that operate at speeds less than 40 mph tend to not regenerate properly. This will cause the filter to become saturated at a faster rate.
A clean DPF helps your engine perform at peak power and efficiency. Cleaning a DPF immediately improves performance, fuel economy, miles travelled between regeneration, and an improved idle.
Over time, ash builds up in the filter causing air flow restriction. This restriction generates exhaust back pressure. This pressure reduces engine efficiency requiring more fuel, more turbo boost and more power to perform the same work from the diesel powered equipment. A clean DPF will also reduce the time required for regeneration, as well as the wasted fuel costs during this idle period.