Valvoline Synpower > Mobil 1
Everyone is quick to hop on the Mobil 1 circle jerk, because its omgmobilone!. There are better oils out there. Mobil 1 has actually switched to a group III synthetic recently, which is essentially a dino oil that is extremely refined to have the same properties as a full synthetic. A real synthetic is PAO (polyalphaolefin). Is there really a difference? A little, but admittedly not that much. Regardless, Valvoline Synpower outperformed Mobil 1 in a majority of the categories used to rate oils, even before Mobil 1 switched to g3.
I never understood why people would use a cheap oil in a good car. Hop onto whatever synthetic bandwagon you want, but please dont use walmart supertech in a good car. $500 beater? sure!