E30 Power Steering Fluid

["Gary Asmussen" <GARYA@xxxxxxxxxxxxxxxx>]

I have recently decided to change the power steering fluid in my 89' 
318i and noticed it was very dark coloured and contained a lot of 
what appeared to be a grey sludge. I performed the change by 
syringing out the old fluid from the reservoir and replacing it with new 
ATF then moving front wheels back and forth to remove any trapped 
air. My questions are: Why is the fluid still grey? What is the 
contaminant?
Is there anotherm (more effective) way of "purging the system of old 
fluid?  
The steering is OK, albeit a little heavy for PS. My first Beamer so I 
am ignorant to the standard of assistance given by these PS units.
Any advice appreciated.
Gary Asmussen
AUSTRALIA

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