[200q20v] Thermostat: 80C vs 87C

Martin, Gary G MartinGG at aetna.com
Tue Feb 27 19:01:54 EST 2001

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 at
102C. I know from prior discussions that S4 seems to  have some 80, some 87.
Does anybody know for sure which is correct and/or does it make any
difference?  Your FINAL answer please. :-)
94S4 (87C)   91 200 TQW(soon) ((80C or less))
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