Sealey-DPFCA400-DPF-Catalyst-Cleaner-Sealey-DPFCA400-This-DPF-Catalyst-Cleaner-is-usable-for-all-closed-particulate-filter-systems-It-is-designed-to-dissolve-&-remove-all-contamination-&-soot-residues-from-the-diesel-particulate-filter-&-the-catalyst-The-removal-of-the-DPF-is-not-required-It-is-also-ideal-for-EGR-cleaning-&-evaporates-residue-free-Sufficient-for-one-application-Sealey-DPFCA400-DPF-Catalyst-Cleaner