There is a bit more to this than simply oak, but not that much more.
Chardonnay Santa Rita Hills “Sanford and Benedict Vineyard” 2004, Au Bon Climat
The nose is hellishly oaky, with hints of off milk, which isn’t terribly attractive. The ripe lemon fruit is nice, though. A lot of toasty, vanilla oak on the palate, with reasonable acidity and just hints of fruit showing past the wood. This is quite a simple wine, and it doesn’t have much in the way of a finish. Vinous wallpaper.