Petrol Tank Wagon National BenzolePECO Quality Line Wagons N National Benzole Petrol Tank Wagon Private owner wagons abounded prior to nationalisation, they would often be seen far from their base as they were sent to collect raw materials and supplies such as coal, and deliver finished goods. All Peco wagons feature free running wheels in pin point axles. The ELC coupling, whilst compatible with the standard N gauge couplings, keeps a realistic distance between vehicles and enables