Do ships use less deuterium with each drive upgrade?
Yes and no. A ship traveling a set distance at 100% speed will use the same amount of deuterium for fuel whether the drive is level 1 or 100. However, if you were to scale back the speed of a ship to approximate the flight time of the same flight with a lower level drive, you will see that you use less deuterium than before. For example, you are deploying a battle ship from 1:1:1 to 1:1:15. With hyperspace drive level 4, it takes a flight time of 0:40:50 and has a fuel cost of 62 at 100% speed. If you upgrade your hyperspace drives to level 6, the same trip at 90% speed takes 0:40:16 for a fuel cost of 58.
