The power steering high-pressure line would be a prime suspect for an oily leak on your floor. I had to
replace it on the Ginster a couple of weeks ago. Since it runs from the P/S pump on the passenger side,
across the subframe, up behind the trans, and finally back to the steering rack, a leak could cause
dripping just about anywhere under the front of the car. If it is leaking, though, the line will be wet at
least somewhere. The parts people at the stealership wanted something like $235 for a replacement; I got
my OEM replacement from German Auto Parts for $177. Definitely a DIY fix. Just make sure you have the 22mm
box wrench to get the banjo bolt out of (and back into) the P/S pump.

--Griff