Rislone® Fuel Injector Cleaner with Fuel Conditioner & Treatment was formulated to be the best all-around fuel additive for virtually any vehicle. It helps eliminate noisy injectors and fuel pumps, rough idle, hard starting and hesitation. Its high-performance additives save fuel while increasing vehicle power, performance and mileage. The unique Upper Cylinder Lubricant (UCL) lubricates the entire fuel system. It also replaces the additives lost in Ultra Low Sulfur Diesel fuel (ULSD).