this could be of interest to C4 owners ....
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On Wed, 17 Jul 2002, Jim Wiggins wrote:
> Question concerning '96 LT4.
>
> Anyone ever notice if their car indicates 5-10 degree higher coolant temp
> when cruising at 70-75 in sixth than in 5th. i.e. Mine typically
> stabilizes at 202-205 in sixth. If I shift to fifth and maintain the same
> speed, temps consistently drop to 195-198 within a couple of minutes. Shift
> back to sixth and the temp starts to climb back above 200.
>
> Is this normal?
>
> TIA,
>
> Jim Wiggins
> '96 LT4 Aqua coupe
> '79 L48 Coppery coupe
> NCM Founding Member #2886
In 5th at the same road speed you're turning the engine faster and
(assuming the stock mechanical water pump) moving the coolant thru
the engine and radiator at a higher rate. This will (probaly up to
a point) coll a little better than slower moving coolant.
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