All this discussion in the updates page over oils and that has made me a bit more confident about submiting this. i saw one other thread about it but it was a bit old and also had to do with boat engines and deep fryers the other one i saw was from last year. Oil lamps or lanterns. they would last longer than torches provide a bit more light. they would require at least one or two metal nuggets and a couple chunks of glass. also you could build lantern posts. once the lantern is on the post, you could open it up like a crucible and see a fuel bar to tell how much fuel is left. you could also do this by right clicking the lantern while its in your inventory. lamps could be made from clay, have less fuel space, and be set on tables or carried. you could also make lanterns from clay too but the clay ones would'nt hold as much oil. refueling them whether they be in your inventory or on a post would be as simple as grabbing a bucket or other container (prolly a bottle) of oil and right clicking it onto the lamp or lantern.
discuss plz.
[edit]
i forgot to mention something for the lamps wick. maybe linen cloth?