I had pretty much decided to use Mobil 1 EP 5w-30 in both of my cars, 01 Pont. Grand Prix and 00 Ford Explorer 5.0 AWD, both w/ about 60k on them. I then started to see mention of this GC everyone was raving about. Once I figured out that it was German Castrol, I rode down to my AZ to see if they had any. Needless to say they had a metric s*** ton of the stuff on the shelf and in the back, the green kind w/ elves at that. My question: Is it really that good or is it just hype because of the short supply of a product equal to Mobil 1? It's virtually the same price and I am willing to give it a run in my cars if there is a true benefit. Is there one?