Castrol EDGE 5W-30 A3/B4 with Fluid TITANIUM is the natural choice for drivers who demand maximum engine performance from todays modern vehicles requiring a high level of protection and higher performance oils. Todays engines continually push the boundaries of technology and engineering. They are smaller and ultra-efficient, without sacrificing performance. Advanced engines challenge the oil with increased pressures. These intense pressures cause friction, which can waste up to 10% of an engines performance. Castrol EDGE with patented Fluid TITANIUM transforms its physical structure to be stronger under pressure to keep metal surfaces apart and reduces friction for maximum engine performance when you need it most. APPLICATION: Castrol EDGE 5W-30 A3/B4 is an advanced full synthetic engine oil suitable for use in automotive petrol and diesel vehicles, where the manufacturer recommends an ACEA A3/B4, API SL/CF or earlier specification 5W-30 lubricant. Castrol EDGE 5W-30 A3/B4 is approved for use in vehicles from leading manufacturers, please refer to the product performance section and your owners handbook. BENEFITS: Transforms to be strongest when the pressure is highest, protecting your engineReduces power-robbing friction across engine speeds and conditionsIndependently tested at the highest standards for proven performanceRecommended by world-leading car manufacturersProtects the engine for the entire drain interval even under extreme pressure