The PS pump suddenly developed a whine today, with a puddle under the car on the passenger side. Put the car up on the ramps and added fluid to the PS Reservoir. No visible leaks from the high pressure line or around the Rack & Pinion, but the frame under the crank pulley was wet. I cleaned that off and the steel tube on top of the frame. Started the engine and found the leak coming from that steel tube near the radiator where it joins a rubber tube. The tube is rusty in that area and it looks like I have a pin hole leak on what I think is the low pressure line from the Rack & Pinion to the PS Cooling Loop that sits on the front of the radiator. I have not been able to find anything about this line in this website or any other internet sites. Does anyone have a schematic of this part of the PS system an PN of the tube? It is not listed in Rock Auto Parts or NAPA that I could find. This car has 191K on it and has always been in Connecticut, so rust it not too big a surprise.