Castrol EDGE  is three times stronger against viscosity breakdown than the leading synthetic and leading conventional oils.**  The unique titanium technology physically changes the way oil behaves under extreme pressures  doubling its film strength*, preventing oil from breaking down and reducing friction to maximize engine performance.

* Castrol EDGE with Fluid Titanium has twice the film strength of our previous formula based on the HFRR friction test.
** Tested in 5W-30 versus all major conventional brands, Mobil1 and Mobil1 Extended Performance in the ASTM D6278 test.

Castrol EDGE is available in the following grades: 0W-20, 5W-20, 5W-30, 5W-30 A3/B4, 5W-30 C3, 5W-40, 5W-40 Turbo Diesel, 5W-50, 10W-30, 10W-40 and 10W-60