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Bomb questions

Happy post-Christmas to everyone.  Yesterday, I noticed evidence of leakage
from my '91 200QW in my mother's immaculate driveway.  I popped the
hood/bonnet and noticed a fair amount of fluid had puddled above and around
the left side motor mount.  I checked the engine oil level, and it's still
topped up.  I'd changed to Mobil 1 about 6 weeks ago, for the first time.  I
dipped my finger into the fluid on the mount, and noticed a very light
colored consistency, and it didn't have any of the sulphur smell of engine
oil (even the smell of Mobil 1 once it has spent time in the engine.

FOr the previous few days, I noticed that the brake warning light takes 10
or 15 seconds to go off, and for the first time (on the 60 mile drive to my
mother's on xmas eve), the brake warning light flickered.  So I anticipated
a bad bomb.  The brakes feel fine at this point.  I did pull the line from
the servo to the hydraulic reservoir, to make sure fluid wasn't pouring out
of there (with engine off?) and it wasn't.  I see no evidence of leakage
from the hyraulic pump, which was replaced with new 18 months and 18k miles
ago.  The rack appears to be dry, as does the sump.  And the brake warning
light IS on when it shouldn't be.

Finally, the question: Can a bad bomb result in hydraulic fluid leaking?
Anybody with any words of wisdom on this.  I ask because I'm now driving my
other vehicle, the car is at my mother's, and I'm about to order a bomb, and
go up and do the work, and then take the Audi on a trip.  Is there another
possible explanation for the leak that I'm missing?  (The coolant level is
where it should be, and the pentosin level is a bit low, but not seriously).


- Jim