'92 Aerostar: Power Steering Fluid Reservoir, and...

So: if the transmission fluid goes down the dipstick
tube, then the cylinder by belts must be reservoir fo
power steering fluid. Can see window wash, the
brake fluid, place to add engine oil, and coolant.

So#2: Thought it maybe needed power steering
fluid due to the "ra ra ra ra" rubbing sounds when
turning sharper turns (ie, parallel parking), but what
I THINK (...) is the power steering reservoir, is full .

So(#3): what could it be?