I am a bit confused, apparently there are two different AC Delco synthetic 0w-20s, one that is good for Dexos and the other DexosD. Evidently both are made by Mobil 1, but I cannot seem to find the ESP X2 oil in anything but quarts locally, but I find a lot of AFE 0w-20 Dexos1, Gen 2.
I see...