Castrol Vecton Long Drain 10W-40 E7 is a full synthetic engine oil formulated with unique System 5 Technology™ delivering up to 40% better performance1. It is also engineered for extended oil drain up to 100,000km2 in modern European diesel engines in accordance with OEM specifications. Castrol Vecton Long Drain 10W-40 E7 is designed for extended drain in modern diesel engines including Euro II, Euro III and Euro IV/V/VI engines where permitted by manufacturers at the specification levels met. It can also be used in offroad vehicles and equipment that require this performance level.