STP Emissions Reducer Petrol – Fuel Additive for Lower Emissions & Fuel System Cleaning

STP Emissions Reducer – Petrol is a specialist fuel additive designed to help reduce vehicle exhaust emissions while cleaning and maintaining key fuel system components that can affect emissions performance.

Ideal for use before an MOT or vehicle emissions test, the formula helps keep important fuel system components clean and supports more efficient engine operation. Simply add the entire bottle to the petrol tank at least one full tank before your scheduled emissions test.

One bottle treats approximately 50–60 litres of petrol, making application quick and straightforward with no specialist equipment required.

Suitable for classic and modern petrol engines, STP Emissions Reducer is a useful preventative maintenance product for drivers wanting to keep their fuel system cleaner and help reduce unwanted exhaust emissions.

Brand: STP
Product Type: Petrol Emissions Reducer / Fuel Additive
Fuel Type: Petrol
Treats: Approx. 50–60 Litres
Suitable For: Classic & Modern Petrol Engines
Application: Add Directly to Fuel Tank
Recommended Use: At Least One Tankful Before an Emissions Test
Key Benefits: Helps Lower Emissions, Cleans Fuel System Components & Supports Emissions Test Preparation