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Rather low water temperature - dangerous ?

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Last night I noticed that the indicated water temperature was slightly below the usual 80-85°C, about 75°C

This morning, it took 8 minutes before the temperature reached 60° and after a 20 minute ride, it wasn't still on the usual 80-85, it was somwhere around 70-75°C.

It's the first time I noticed this.

Is it dangerous ? I hope not, since it's the oil temperature that is important.

Can I go full throttle up to 6000rpm with the indicator below 80°C ?

I've got a 2002 4S.

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Make sure cooland level is correct and properly bled. An air pocket can cause the gauge to read improperly.  I doubt you coolant temp is as low as the gauge indicates.  You may also try resetting the computer,  Many times I have gotton screwy gauge readings and a simple computer reset fixes them.

This makes sense. I checked the water level and it's clearly UNDER the minimum level. I wonder how this happens, since the car has got his servicing only 5000 kms ago !?

Can I safely drive to my Porsche-dealer (25 kms) without adding water ? It seems one should fill up with water and coolant mix, but I don't have this (and all shops are closed today and tomorrow).

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