Hello there, I have a 2006 f-250 powerstroke fx4., and I'm having a few issues. The problem is when I'm trying to turn while at a good speed my power steering just stops working, and usually at the same time my brakes get really stiff and don't want to work. I checked power steering fluid, and then filled reservoir next to radiator, after I filled that one the fluid became milky? Also when I'm just cruising down the road at times my steering just feels a little sticky? It gets a little scary pulling a heavy load down the mountain not knowing if your steering is going to work or not.