Power steering fluid questions

["Matt Daniels" <matt@sumus.com>]

I discovered this weekend that the level of power steering fluid on my '93
90S V6 was below the MIN marker, I purchased the mineral oil based fluid
from the dealer and topped it off (just below the MAX marker). Upon reading
the owners manual, it states that if it goes below the MIN mark "it is not
sufficent to just add power steering fluid" and that I should have it looked
at by the dealer. What is the deal if it goes below the MIN mark and why
isn't it sufficent to just top it off? Is it anything to worry about? After
adding the fluid my steering seemed a little tighter than it has been for
the past few months.

After looking at that, I decided to take a look at the level on my newly
purchased '86 4kcsq, after cleaning off the reservior (I actually thought it
was black plastic, it was that dirty) I discovered that it too is below the
MIN mark. The manual says I need to add ATF Dexrol (sp?). Is this the same
mineral oil based stuff I added to the '93 90? I tried looking for ATF
Dexrol at Autozone, but didn't see anything. Is this special fluid or will
any power steering fluid work in this model?

BTW, finally got some photos of the new 4k, you can find them at:
http://www.a4.org/gallery/matt4k/4kcsq_1.jpg
http://www.a4.org/gallery/matt4k/4kcsq_2.jpg
http://www.a4.org/gallery/matt4k/4kcsq_3.jpg
http://www.a4.org/gallery/matt4k/garage.jpg

Thanks for all the help.

Matt Daniels
'93 90S
'86 4kcsq