Porsche 911 2020 Owner's Manual page 108

Coolant
Checking the coolant level and
A
adding coolant
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C
D
E
F
G
H
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K
L
M
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Fig. 67: Coolant reservoir display
> Please see chapter "Instrument Cluster" on
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page 138.
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b b Vehicle is level.
b b Engine is cold and the coolant temperature gage
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is below 140 °F/60 °C.
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1. Read off the coolant level. The fluid level must
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always be between the min and max markings.
2. If the coolant level is below the min marking, add
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coolant.
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3. Carefully screw off the coolant reservoir cap and
allow any excess pressure to escape.
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4. Unscrew the cap completely.
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5. Refill coolant. Only use a mixture consisting of
equal parts of freeze protection agent and
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Y
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distilled water. Do not fill beyond the max
marking.
6. Screw on the cap of the coolant reservoir until
you feel it engage.
7. Significant coolant loss indicates leaks in or
overfilling of the cooling system or overfilling.
Check the cooling system and have the cause of
the coolant leak rectified immediately. Visit an
authorized Porsche dealer. Porsche recommends
an authorized Porsche dealer, as they have
trained technicians and the necessary parts and
tools.
Information
If pure water has been used to refill the reservoir in
an emergency, the mix ratio must be corrected. Sig-
nificant loss of coolant indicates leaks in the cooling
system or overfilling of the cooling system.
e Have the cause rectified immediately. Visit an
authorized Porsche dealer. Porsche recommends
an authorized Porsche dealer, as they have
trained technicians and the necessary parts and
tools.