For about 5+ years, my power steering reservior leaked from what appeared to be around the cap/dipstick. From looking at photos of other SVXs, this seems to be a problem others have. Here is how I fixed it...

• Go to Home Depot/Lowes and buy a small sheet of thin rubber. The one I got was red and about 6" square and about 1/8" thick (about $1).
  
• take the power steering cap/dipstick off and measure the inside and outside diameter necessary to create a gasket out of the rubber.
  
• Cut out the gasket. I used a compass to draw up the gasket on the rubber sheet and sharp scissors to cut it out.
  
• Install the gasket onto the cap/dipstick. It should have to stretch a bit to get over the tabs that hold the cap/dipstick to the reservior.
  
• Put the cap/dipstick back on the reservior. If you cut the gasket to the right size, you should never have to wipe ATF off of the top of the reservior again.