I replaced my fluids twice but it keeps going nice and smooth on turning then turns hard and the fluid goes back to black. Raging, think I'm going to need to go back to the indie and get that new rack. But when oiled it drives fab and smooth. Any ideas on what it is? 

The fluid is over heating during use, check the cooling circuit for build up of leaves / debris.

Thanks man! I'll do that today. It seems to make the steering go heavy when its dark, I've lots here so keep topping it up and using a baster to take out the old. But its not too classy  

I assume that you are using the proper Land Rover PAS Fluid and not standard PS Fluid?
Regards
Barry 2017 Range Rover Sport TDV6 L494 SE Fuji White
2011 Range Rover Sport SDV6 L320 SE Fuji White Loved but GONE
2010 TRAKKA Motorhome Fiat Ducato GONE (What a dud, don't buy one)
2006 Discovery 3 SE TDV6 Automatic Chawton White/Ebony. Loved but GONE
2006 BMW X5 diesel White/Charcoal, Bought new, Gone after 12 years! Was Excellent.
Ex Member Range Rover Club NSW

Yes the green extreme climate stuff, its looks lovely going in - but dark coming out!