Power Steering Liquid in MB 190E(year 1987)

I was checking the level of the power steering liquid and noticed that the liquid is a grey mud like color.
Is this a normal state?

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.