I just read Valvoline's 4 X better wear protection thread( vs. Mobil 1) and happened to see this display for Castrol EDGE 5W-30. Some poster's mentioned that Valvoline may be making an unsubstantiated claim against Mobil 1 but now Castrol is doing it too, citing the Sequence IVA wear test.
Check out the photo from their display:
Check out the photo from their display: