New and improved, with a stronger and faster acting formulation....STP Diesel Injector Cleaner is specially formulated to remove power-robbing deposits from diesel injection systems. One treatment helps unclog injectors to restore accurate injector spray patterns and lost power, quickly dissolving deposits to improve the engine"s performance. The difference will, in most cases, be noticed within 50 miles.....Benefits of Using STP Diesel Injector CleanerSTP Diesel Injector Cleaner used regularly helps:Smooth out rough idlingClean and condition the entire fuel delivery systemImprove fuel economyRestore power and accelerationReduce exhaust emissionsSTP Diesel Injector Cleaner:Clears clogged injectors in just one tankfulIs safe to use with other STP additivesSpecially developed for diesel enginesIs safe to use in turbo/super charged vehicles, and those fitted with catalytic convertersWill not harm oxygen sensorsBrand New Bottle 200ml