its hard to get all the fluid out of the system, id say about 70% stays in even after you empty the resivior, in my opinion if you are dead set on having clean fluid i would disconnect the lines turn the wheel and have all the fluid pump out then turn the pump by hand a few times and get all the fluid out of there, then hook it all back up fill it up bleed the system leave it like that and then do it all over again, but in my opinion if it works who cares what color the fluid is ive had fords with 300K miles never changed the PS fluid
1989 Ford Mustang LX Notchback,5.0L 5 speed
331 Stroker wuth forged eagle rotater, Scorpion roller rockers, mahle forged pistons, AFR185s,Spec Stage 2+ Clutch,Steeda Sub Frame Connectors with Seat supports,Hurst Short Throw Shifter, Mr. Gasket Hi0-Flo 180* T-Stat,Lunati VooDoo Series cam,Trickflow upper and lower intake,BBK CAI,BBK Long Tube Headers,BBK Off-Road H-Pipe,Flowmaster 40 Series Mufflers,Aluminum Driveshaft,17" Cobra R's,10000K HID's
One problem after the next !!