I spotted two different Batches of GC at my local Autozone today. They both said Made in Germany on the back and the packaging looks exactly like my M04 Batches. 12Qts. of M050756ATW4410469 1814/1815 Couple of Qts. of M051226ATW48009 726 These are both Green then right (Made in Germany on the back)? How do you distinguish the difference between the Green and Gold (By Batch Numbers)?