Ahighly effective fluid for cleaning soot clogged DPF units without disassembly. Dissolves contaminants inside DPFs, restores vehicle performance and fuel consumption. Regular servicing of DPF units can help avoid expensive repair costs. Use only together with Pro-Line Diesel Particulate Filter Purge (part no. 20112), to apply use only DPF Pressurized Tank Spray Gun (part no.7946), DPF-Probe with 5 interchangeable tips (part no. 7945) and if needed DPF Spray Probe long (part no. 20630).