Resins, or sludge, often originate from 'soft' contamination consisting of, for example, dirt, dust and wear particles. Resin forms a kind of deposit in the form of a layer on the wall and on components. Finally, this form of contamination develops into the well-known brown deposit on, for example, servo valves and other valves, so that the latter begin to 'stick' and finally have to be replaced. Current filters also often get clogged, so that they can hardly function anymore. Resins develop in almost every machine and are often ignored. This is unjustified, because resins are one of the largest oil polluters. With Triple R we do not only remove resin particles, but also resin which is dissolved.