Liqui Moly Pro Line Diesel System Injector Cleaner Flush Treatment 500ml reduces pollutant emissions and optimizes smoke opacity before the emissions test. Successfully tested in international test bench investigations, it cleans harmful deposits in injection nozzles, the entire fuel system, and combustion chambers. It prevents jet needles from fusing and gumming, optimizes the combustion process, and restores the engine's original power. This cleaner is suitable for all diesel and turbocharged diesel engines, with or without a diesel particulate filter (DPF). The contents of the can are sufficient for a maximum of 70 liters of fuel. It eliminates diesel knocking, removes deposits from the entire fuel system, increases operational reliability, guarantees optimum combustion, and provides good corrosion protection. It is highly economical, minimizes wear, ensures optimal engine performance, reduces exhaust smoke, and cleans the fuel system. For application, add directly to the fuel tank. For preventive use, apply during every inspection, after repairs to the fuel system, for treating problems, or after every JetClean cleaning. To eliminate problems, mix the product with the fuel during refueling over approximately 2,000 km.