Quote:
Originally Posted by LostCause
Power brakes take energy to use, right?
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Wrong! Well, technically it takes energy to use them, but such a trivial amount that using the transmission would probably use lots more. All the power brakes do is use a tiny fraction of the engine vacuum to amplify the pressure of your foot, so it might use 3 or 4 times the energy it takes to move your foot a few inches.