Auto Zone this morning, checked out the Castrol racks, found two quarts of 0W-30, sure enough marked "Made In Germany" above the UPC. Could this be the first GC I've ever found, finally located? And if so...what to do...buy it or not...only vehicle I have on the road now is an 03 Explorer, which I usually use 5W-20 or 5W-30 in. Though with my winter OC due soon, I suppose I could mix the GC I think I found with a 5W-30 weight for a nice blend...? I live in New England. What do you guys think?