Professional DPF specialists often see heat damaged DPF's, and this is primarily caused by using the wrong additives. A DPF will clog up with ASH over time, especially if the wrong fuel or oil is used (sulphur) the ash particles from this will continue to build until they clog the DPF ...
WARNING:Using an additive that raises your engine burn temperatures is not good if you are in a DPF cleaning cycle, as the engine is already raising it's temperature and in many cases this can result in damage to your DPF filter. Professional DPF specialists often see heat damaged DPF's, ...