leaking steering rack - Pentosin 7.1?

[Efraim Gavrilovich]

Hi all,
The second steering rack in my TQ has developed a leak and I am feeding it
Audi G002 oil for a while now. A week or so ago I decided to switch to
Pentosin 7.1 to save some money, as it is $10 cheaper. Only after I finished
the first bottle of Pentosin and was about to put it in a garbage I noticed
the warning on the bottle saying not to mix it with any other hydraulic oil.
Another example of RTFM syndrome. Well, it's too late now. Did I do any
damage to my system by mixing it with G002?
Second question. It took me 10 days to go through the bottle of Pentosin
which amounts to over $700 per year at this rate. It would cost me about the
same to replace the rack. I know it's the rack and not a broken hose problem
as it squirts the oil at its sealed end on the passenger side when steering
wheel is rotated. My parking spot at the office can easily be recognized by
a large puddle where the front passenger side tire usually rests. What is
the right thing to do considering that replacing the rack does not guarantee
that it would not have to be replaced again next year or year after? Should
I bite the bullet and replace the rack or keep on buying Pentosin?
Thanks in advance.
Efraim Gavrilovich
1988 5KTQ 332,000km (206K mi) 1.8 Bar
1990 90 108,000km (62 Kmi)
Vancouver, Canada