I was just at my AZ store here in Humble Tx and I found several bottles of GC year 01 day 325 and up to 02 year. What kept me from buying it was that the bottle said it was made with imported and domestic base oils and was only rated A1 / SL. Question: is the '01 oil the green stuff or is that not in the window of time for the imfamous "green" that we (we?) so revere? I currently use M1 but the GC UOAs posted here make me wonder. I feel myself being pulled into the Green web but I want to make sure I'm getting the real thing! Double Vanos