Lamp oil-
Baby oil-
Homemade oil-isopropyl alcohol 91% and higher, with a bit of distilled water
So far I have used store bought lamp oil mixed with baby oil and the lantern burns just fine. But what about the other common oils? Olive oil apparently is so dense a Biblical style lamp needs to be used. A balled up cotton gauze ball can suffice as a wick with olive oil. Vegetable oil also can be rigged up to burn in a glass jar with a piece of denim as a wick. These oils need thinner wicks that can utilize the oils quicker. Next time the lights go out don't panic! Just grab some oil and with a little creativity you can have a light that burns for hours.