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Re: Power steering fluid replacement, drain or flush ?
Power steering fluid and ATF are both types of hydraulic fluid. The difference is ATF has better lubricating properties. You can tell if you take a little bit of each type of fluid and rub it between your fingers. You can feel the difference; the power steering fluid feels feels thinner, almost kind of watery compared to ATF. The theory is that using ATF in the power steering system keeps the pump lubricated better and slows down the wear.
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"Ok, systems check; the battery is discharging, the oil temperature is very high, the oil pressure is very low, the engine temperature is off the end of the scale, I'm running out of petrol... but the clock is correct!"
-James May, in an old, worn out Lamborghini purchased for less than £10,000. 
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