No, i get a lot of oil in this game. More globally, my planes behave strangely, sometimes, i cannot see their range circle and so i cant give them any order (in city or airport). And oftenly planes keep a green movement arrow under their icon even if they don' t have any movement order for the turn, i have to cancel the last order (which doesn't exist by the way) to remove the green arrow, and make them move. But it doesn't work all the time.