If you get the blocked DPF light then give it a long motorway run in a lowish gear to keep the revs up which will hopefully clear it. Your dealer can start a regen for you but obviously will charge you a considerable amount of money for the pleasure! Best advice is to pile on the miles, which is what diesels do best. 1. This 6.7 Cummins had a blocked DPF code, after taking it off this is what happened when we blew compressed air through it. The unexpectable happened DPF got clogged and car threw a 480, 481 error requiring DPF replacement. I heard that it can be cleaned chemically. I did that A: It is important to clean your Duramax DPF filter because a dirty DPF can result in your engine to lose power and perform poorly. By cleaning the filter, it will allow your engine to run smoothly and restore its efficiency. Q: How often should I clean my Duramax DPF filter? A: A Duramax DPF filter is recommended to be cleaned every 6-8 months You may be looking up on how to clean DPF filter VW Passat or how to clean DPF filter VW Golf, but you would not be able to get a proper cleaning without the use of a hydraulic DPF cleaning machine. Why Volkswagen DPF Cleaning is Essential. At 30 Minute DPF Clean, we implement methods that are comprehensive, quick, and long-lasting. Guide on how to deal with the dreaded Detroit Diesel SPN 3720 FMI 15 DPF end of life on the budget.Things you need:DPF clamp and gasket kit: 2015 Golf TDI. Nov 18, 2016. #1. I've been looking into DPF cleaning solutions, the kind that you inject directly onto the dpf to cleanup the soot residue. They come usually in a 2 bottle formulation. bottle 1 = cleaner. bottle 2 = rinser. I have come to the conclusion that these products are massively overpriced. Keep up your maintenance, and don't touch that filter: "In a court settlement with the EPA, Edge Products, a manufacturer of electronic power modules for diesel engines, has agreed to pay a $500,000 fine for manufacturing and selling electronic devices that allowed owners of Chevy, GMC, Ford and Dodge/Ram diesel pickup trucks (2007 and later) to remove the programming for diesel particulate c2pCKBL.