STP Ultra 5 in 1 Diesel Fuel System Cleaner, Concentrated Cleaning Power, Car Accessories, 400 ml & GST54200EN Diesel Treatment 200 ml : Amazon.co.uk: Automotive
STP Complete Fuel System Cleaner Petrol 400ml | Halfords UK
STP Ultra 5-in-1 Diesel All Season Fuel System Cleaner, 354mL | Canadian Tire