STP High Mileage Petrol Injector Cleaner 200 ml is a fuel system additive designed to clean and protect petrol fuel injectors and the entire fuel delivery system, especially in vehicles with higher mileage (typically over 75,000 miles / 120,000 km). It helps restore engine performance, smooth running, and efficiency by removing power-robbing deposits that accumulate over time.

What It Does

• Cleans harmful deposits from petrol injectors and the fuel delivery system that can restrict fuel flow and reduce performance.

• Restores engine performance and responsiveness, often noticeable within about 50 miles / 80 km of use.

• Reduces friction and wear using STP’s WEARGUARD technology, helping improve efficiency and extend component life.

• Helps lower emissions and can improve fuel economy by promoting more complete combustion and smoother engine operation.

• Conditions the fuel delivery system, which can help prevent hesitation and rough idling.

Suitable For

• High-mileage petrol engines (vehicles with significant use).

• All classic and modern petrol engines are safe for catalytic converters and other fuel system components.
How To Use

Add the entire 200 ml bottle to a full petrol tank (typically treating around 50–60 L of fuel). Use it periodically (e.g., every 3,000 miles / 4,800 km) to maintain a cleaner fuel system and help sustain performance.