Good News, I scored a GC M04 for .99 cents today. Bad news is there was only one in the store. I checked another AutoZone and it was $4.99 - go figure. I'm guessing this was a fluke. It was in a bin with some Valvoline Racing 60 wt. and Havoline straight 30 wt. I'm trying to figure out why persue the stuff? I would love to use it in my Daughter's Maxima, but if I can only find enough for 3-4 changes where do I go after and what good have I done?