Hi just had a peek at the power steering fluid in my recently bought xtype. It looked a bit dark so I siphoned a bit out and it's nearly black. All the fluid I have ever seen was pinkish.

Any thoughts on this? I do believe Jaguar do an additive to the fluid to stop squeaks. Is this black?

It looks like the filter and the while system is dirty. As whenever you change the steering liquid, it is a must to clean it first (you do that with the same steering liquid you are about to fill in). I faced the same case when had to replace the power steering cooler (https://www.carid.com/power-steering-coolers/). First, it was a problem for me to find one. Next, when we took the old one apart, we noticed that the fluid went black, though usually it was pink. The problem in my case was about a clogged filter, and then the whole system was dirty from inside.