What is power steering compare to manual steering?
Power steering has a pump driven of the engine that pressurizes hydraulic fluid to assist in moving the steering rack.
Manual steering doesn't have the pump, so the effect to turn the steering wheel is high, especially at low speeds.
Manual steering racks have a higher gear ratio to make it easier but an example is to turn your steering wheel with the engine off. You can get an idea of how much the pump helps.
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