[200q20v] Re: [s-cars] Thermostat: 80C vs 87C

Paul Gailus gailus at popmail.mcs.net
Tue Feb 27 19:51:13 EST 2001

The family album says the S4/S6 and 200TQ use
an 87 deg thermostat, part no. 069 121 113.

Perhaps the Bentley means that the main valve on
thermostat opens at 87 deg, and the bypass valve
disk at the back of the stat closes against the
block at 102 deg.

93 S4
95 S6

----- Original Message -----
From: Martin, Gary G <MartinGG at aetna.com>
To: '200q20v' <200q20v at audifans.com>; 'AUDI S Cars Discussion List'
<s-car-list at yahoogroups.com>
Sent: Tuesday, February 27, 2001 6:01 PM
Subject: [s-cars] Thermostat: 80C vs 87C

> Okay, I'm going to beat this horse some more.. S4/200 I5 engine. Which
> thermostat, 87C or 80C. I know this has been discussed before. Looking at
> Bently it refers in several places to "bring engine to operating temp of
> 80C" and then in the coolant section states " thermostat opens at 87C and
> closes?? at 102C". Bad wording there, I think they mean it's totally open
> 102C. I know from prior discussions that S4 seems to  have some 80, some
> Does anybody know for sure which is correct and/or does it make any
> difference?  Your FINAL answer please. :-)
> Gary
> 94S4 (87C)   91 200 TQW(soon) ((80C or less))
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