I did a search and didnt find this anywhere, so here goes:
I think that when a buildcraft liquid pipe is connected to a canning machine, oil and/or fuel could be pumped into the canner and can the oil/fuel into cells.
Fuel and oil cells could be used as a stackable way to store fuel and oil
Fuel cells could be canned into a fuel can
oil and fuel cells could be burned in a generator for eu
and any other uses anybody comes up with i will post here
So, what do you think? (flamers, critics, and +1s are all welcome )