I am of the opinion that Viogniers don't age well at all. Theoretically, Chateau Grillet can age but other than that wine I would never recommend any one to lay down Viognier for any length of time. Personally, I would not age Chateau Grillet either. To my palate, Calera Mount Harlan Viogniers does not need any where near eight years to mature. The only aging most Viogniers need is the time the wine sits in your trunk while you drive home from the wine shop. Plus, this bottle's provenance is far from certain. I would drink it up.