STP COMPLETE FUEL SYSTEM CLEANER 354 ml: OUR ADVANCED SYNTHETIC TECHNOLOGY HAS MORE EFFECTIVE CLEANING POWER: HELPS SAVE GAS BY KEEPING FUEL INTAKE SYSTEM CLEAN.HELPS RESTORE PERFORMANCE - REMOVES DEPOSITS - INHIBITS CORROSION.STP SUPER CONCENTRATED FUEL INJECTOR CLEANER 354 ml: STP Super Concentrated Fuel Injector Cleaner contains concentrated detergents that help dissolve and remove harmful carbon, gum, and varnish deposits on fuel injectors.Without cleaning, deposits can lead to hard starts, lost acceleration and rough idling.This product is made with jet fuel, a high-quality carrier of active ingredients.