assorted 89 90q questions

[Nathan D. Engelbert]

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I have a few questions and one problem with my 89 90q.

Problem:

About a week ago, my car began smelling like gas once I got in after sittin=
g for up to about 24 hours.  If I were to wait a day, the smell was virtual=
ly gone.  This past weekend I removed the trunk liner and back seat to try =
to find a gasoline vapor leak somewhere.  The rubber hoses connecting the v=
apor return line and the gasket at the gauge float were all fine, no fumes.=
  There were also no puddles anywhere in the trunk near the tank.
I then recognized, running the car sitting in traffic, that the fumes seeme=
d to be coming from the outside.  I was sitting at a light with my window o=
pen, and the same fumes were escaping.  I ran my car in the driveway and th=
e smell seems to be coming from the driver's side, underneath the car.  The=
 fuel pump is there, right?  It was humming away, but no drips.

Guesses?

Questions:

1.  I bought some RedLine gl-5 75w90 for the rear diff, where are the drain=
/fill plugs?

2.  What's the capacity of the transmission/center diff for the mt90 I boug=
ht?

3.  Are there two washer fluid pumps?  I get flow with lights on from the l=
ight washers, but with lights off, no pump running and no flow with lights =
on or off for windshield.  The rubber grommets with hose connections under =
the jets on the hood are also dead, nice and torn.  Should I just get those=
 at the dealer (McGrath Audi in Glenview IL)?  Is there a better source tha=
t's worth waiting the shipping time?  I'll probably end up with the blau wi=
per fluid pump unless the dealer price is exceptionally inexpensive, does B=
lau stock these grommets?

TIA

Nathan Engelbert
89 90q--202k miles and counting!
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