Subject: Coolant loss

[Christopher Ritchie]

I've got a 1995.5 S6 Avant with 100k miles.  Over the weekend,
the low
coolant warning came on.  I topped the overflow tank with
distilled water
and antifreeze, and noticed that the light was coming on again
today.

The temp gauge behaves normally.  I see a fair amount of coolant
in the
vicinity of the overflow tank (around the top edge and beneath
it).  I'm
assuming that this is due to boil-over since I don't see any
obvious leaks.

No radical driving (long duration, high speed).  Ambient air
temps in the
40-60 degree range.

Any BTDT for this?!  My best guess is thermostat failure.  Maybe
pressure
cap?  Any thoughts appreciated.
*******************************************

Does your car have the infamous multi-function sensor/switch (for the
temperature gauge) like the type 44s?  On a 5K, sometimes when this switch
fails, the gauge can work, but it will give the Autocheck a low coolant and
overheat warning.




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