FRAM Octane Booster is a multi-functional treatment formulated to enhance engine performance, reduce combustion chamber deposits, and clean intake valves, carburetors, and port fuel injectors. It is designed to prevent and resolve surging, stumbling, hesitation, stalling and rough idle for improved drivability. The FRAM Octane Booster uses high-quality additives to improve performance in vehicles experiencing rough idle and sluggish performance. This treatment is safe for catalytic convertors, oxygen sensors, and turbos. It can be used in passenger cars and light-duty trucks of all ages.