Why don't you splurge and buy a couple of quarts of Mobil I synthetic ATF. I have this in several cars for 10+ years now.laminarflow said:Need to know the easiest way to flush out the p/s. When the weather turns colder, the steering wheel is hard to turn, after the car warms up, it is back to normal. Maybe I have the wrong fluid in the pump. BTW, what fluid should be used?