pentosin types

["Jeremy J. Walters" <jjwjr@ix.netcom.com>]

I'm sure this has been covered before-sorry if it has!
Question concerns the difference between 11S and 7.1 types.  6 mos. ago,
I replaced my steering rack and filled the system with the stuff from
VW/Audi dealer.  Which type is in their can?  What should I use to top
up?  I've heard the 7.1 and 11S are NOT compatible.  No, the rack is not
leaking yet, one of the hoses seems to be weeping where it is clamped to
the fluid resevoir-every 5000 seems to drip here!

Thanks
Jeremy Walters
San ramon, CA