No Flasks of Oil?

[D'karr]

They are in the table with the elixirs.

Oh, wait ... they left that out too, despite multiple references to elixirs. So now, instead of refilling your lantern with oil, you have to buy a new lantern.

It's a basic tenet that you must buy new items whenever the fuel goes out on them. It's like those cheap electronics that are cheaper to buy new than repair.