If you want to monitor water temps. you could just use something like a "ScanGauge" by Linear Logic. Velcros to your steering column and monitors Water temp., Volts, Intake air temp. and several other things. Monitors 4 things at once, not expensive, no installation required. Won't give you an alarm but you have a constant readout. Steady cruise on mine shows around 100 degrees C , dropping into the 80's when pushed as mentioned above. These high temps. are for emissions and fuel economy not longevity. I'd much rather have lower cruising temps for longer life of all the underhood rubber and plastic but the computer controls all that and it doesn't seem possible.
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