[V8] Power steering hoses

[george.fallot at verizon.net]

Last night I noticed a power steering hose leak.I had to add a qt. of fluid just to see where the leak was coming from. Unfortuatly, it was only 8 degrees here on Long Island so I stopped there. It only leaks when I turn the wheel pretty hard. The leak is in the expansion hose (at the pump end)and goes to the rotary-slide valve housing, whatever that is. I would like to use the car around town until I can get the part.My local supply house says they need a part number or the hose, but I don't want to take it apart before I have the part to repair it.
Does anybody know the part number and cost.If it's too high I will take it to my local hose shop and have it made.Also are there any negitives to using Mobil dte-13m,and can they be mixed.
Thanks,George