Check the listing for details. Clogged FAP and Catalyst Cleaner, Certified TÜV 5 Liters. Condition: New. Listed at 89.04 USD. 3 liters minimum are necessary for an optimal result. Advantages: concentrated detergent dissolve and eliminates the particles of soot and pollutants trapped in the antipartic (FAP) and catalyst filter. Not aggressive for FAP, safely usable on aluminum, magnesium, zinc and cadmium parts. Perfectly compatible with FAP and the latest generation catalyst. Instructions for use: Remove the FAP or the catalyst and fill half the cleansing solution. Leave to act for about 10 hours. It is recommended to shake and return the FAP or the catalyst every 5 hours to allow the DPF FLUSHING to act well on the entire surface of the tammie. Then rinse the Fap or the catalyst with warm water. The use of a high pressure device will facilitate its rinse. Perform a 20 -minute test tour of a sustained engine spee.