The best technological procedure for cleaning a clogged diesel particulate filter is to burn the diesel particulate filter in an industrial firing furnace in a computer-controlled manner. The challenge with burnout is that some areas of the diesel particulate filter are usually so clogged that even after a 24-hour burning process, these areas are insufficiently oxygenated and incomplete burn-off. With our patented O2 industrial free-burning method, oxygen is introduced into the particle filter during the burn-off process according to the patent. The effectiveness of a patented burn-off process enables a very gentle and perfect burn-out result for the ceramic filter body of the diesel particulate filter. After the free-burning process, the diesel particulate filters are additionally rinsed out with a wash-out process developed by us and patent pending.