power steering

Hi, this is an odd scenario I know. I was coming back from lunch yesterday and when I turned right I heard a growling like noise and then steering was real tight. I got parked and when looking back at car it was pouring liquid from the underneath front. I called dealership and they said more...

So, all of a sudden, its hard to turn the wheel on my Nitro. I checked the power steering fluid level when i got home and it seems like the fluid level is high. Pretty sure youre supposed to check the fluid with a hot engine right? What would cause a high fluid level? Is there a way to test...