Restore your vehicle's performance with BG CF5 3-in-1 Fuel System Cleaner, a premium additive formulated to clean, protect, and optimize gasoline engines in a single treatment. Engineered with advanced detergents, BG CF5 removes stubborn carbon deposits from fuel injectors, intake valves, and combustion chambers, restoring smooth power delivery and throttle response. This professional-grade formula helps improve fuel economy, reduce harmful emissions, and prevent hesitation or rough idling caused by fuel system buildup. Compatible with both port-injected and direct-injected engines, BG CF5 is safe for use with all ethanol-blended fuels (E10, E15, and E85). Each 11 fl oz bottle treats one full tank of fuel and is ideal for routine maintenance or pre-tune engine preparation, ensuring long-term protection and peak efficiency across driving conditions. Warning: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.