This is really hampering my late game war effort. I have 4 oil wells, not built any oil plants, most of my offensive units are just sitting around doing nothing as I cannot repair them. Why do you need oil to build a basic infantry unit? No point in rushing replaceable parts as oil comes later. Where is the logic for needing oil to build artillery, tanks etc. You should only need oil to run mechanised units, not to build them. There really needs a patch to fix this. I cannot trade for oil either so I am really stuck, makes the game unplayable towards the end. I have to use bombers, battleships to launch most of my attacks and finish off with a unhealed unit.