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.
Use every oil change or 4,000 miles.
STP® Super Concentrated Fuel Injector Cleaner is safe for all gasoline engines.