Step 5: Add the Oil
Well, I decided that I didn't want to waste a bunch of lamp oil just to fill the wine bottle. So I thought, "Hey! Oil floats on water, right?" You see where this is going.
Put your cork and wick into the bottle to get a feel for how far down the wick is going. You can make a mark with a sharpie if you'd like, but I opted out on this. Now that you have a basic idea of where your wick reaches, fill the bottle up with water to about 3/4-inch below the point that the wick reaches. Now pour oil on top of that, and put in your wick!