Castrol Vecton Fuel Saver 5W-30 E6/E9 is a full synthetic Low SAPS engine oil formulated with unique System 5 Technology™ delivering up to 40% better performance1 in the latest European diesel engines including Euro 6 and engines fitted with DPF. It also gave up to 1% fuel saving2 in a Euro 5 engine using the European Transient Cycle test when compared to a modern top tier 15W-40 engine oil. Castrol Vecton Fuel Saver 5W-30 E6/E9 is designed for better fuel economy in the latest Euro 6 diesel engines. It is also suitable for extended service intervals as recommended by many European engine manufacturers, including MercedesBenz and Volvo, and is approved for use in MAN Euro 6 engines. It can be used in low emission Euro 4 & Euro 5 European trucks and buses, especially those requiring a low SAPS lubricant and in older on-road and off-road vehicles and equipment that require this performance level.