Apparently had 3 different chemicals clean my cars dpf . At the time the service was professional and quick . Undertook " 3 part dpf specialist clean " on 9th December 2020 and blocked by 29th March 2021 after just over 3 months !!!! Warranty given for 6 months or 10000 miles not worth paper wriitten on . Warranty claim form expected you to provide a fault code ! and if it its different from the fault code at time of dpf clean they will land you with a £122 call out charge ! Their dpf report did NOT provide a fault code at time of dpf clean ! I paid £274 for nothing , please don't be misled by this company and waste your money Go to a proper garage or someone you can trust that knows a reliable , trustworthy garage .