Today's engines are groundbreaking in both technology and technical development: they are smaller and ultra-efficient. These advanced engines test the oil at higher pressures, which can cause friction. Castrol Edge with Fluid Titanium changes physically in structure and becomes stiffer at extreme pressure points. This prevents metal-to-metal contact and reduces friction. When the pressure decreases, the oil returns to its liquid state. Castrol Edge with Fluid Titanium is stronger under pressure, changes structure and reduces performance reducing friction by 20%.