The P&W R-2800 typically used around 10 lbs/min of ADI at TO power levels. The ADI was various combinations of water, methanol, ethanol, and a little bit of anti-corrosion oil. Each engine ADI tank held around 15 gallons. The fuel flow had to be adjusted based on the ADI mixture. Water does not contribute energy to the combustion process, and it displaces available oxygen in the intake charge mass flow, so the fuel mixture needs to be adjusted accordingly. Methanol and ethanol in the ADI does contribute energy to the combustion process, so the fuel mixture also requires adjustment to compensate for this.