RU on the label. For professional application on diesel particulate filters of diesel cars. It easily cleans and restores diesel particulate filters without disassembly. It optimizes fuel combustion and reduces formation of ash particles. It reduces ash burning temperature so that ash particles burn faster at a lower temperature. It restores the engine power. It is suitable for city driving conditions. It can be used with the in-built regeneration system. Fast result. Application: 500 ml for minimum 40 liters of diesel fuel. Add in each third fueling or each 3 000 km.