Engines that are sensitive or in severe service can have performance problems caused by fuel injector deposits. Improvements in gasoline that became mandatory January 1, 1995 may not solve all of these problems. Techron Fuel Injector Cleaner with its exclusive Chevron Techron technology can remove deposits from clogged fuel injectors in one tankful. Fuel injector deposits at the injector tip can impact fuel flow, upsetting the air / fuel mixture. The symptoms of these deposits can be: hesitation or stumble during acceleration; loss of power; increased emissions of hydrocarbons and carbon monoxide. Techron Fuel Injector Cleaner can clean up these deposits in one tankful. Techron Fuel Injector Cleaner is designed for all carbureted or fuel injected spark ignition engines. Safe to use every 1,000 miles or as needed to keep fuel injectors clean. Suitable for use in two-stroke engines. Not recommended for diesel engines.