Hydrogen Thruster's Max Required Input readout is wrong
The info part of the terminal when viewing a hydrogen thruster displays a "Max Required Input" volume, but it is displaying the MaxPowerConsumption value (MW) without accounting for the EnergyDensity power-to-fuel conversion.
For example, the small-grid small hydrogen thruster displays a fuel consumption (Max Required Input) of 1.25 hL (125 L/s) while its actual consumption is 80 L/s.
12,931L of hydrogen in an attached tank is consumed, (at 100% override) in about 9771 frames (as measured by the in-game frame counter), or 162.85 seconds. That comes to about 79.4 L/s.
Therefor, the value displayed in-game is incorrect.