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Checking the coolant level
As far as possible, only open the cap of the expansion tank when the engine is cold
(arrow in Figure 7.1.6.3). If the system is opened when the engine is at operating
temperature, air can get in and impair the function. Behind the cap is a filler gauge that
shows the fluid level (Figure 7.1.6.4). This must be between the min. and max. marks
when the engine is cold. The vehicle must be on a level surface for a correct
measurement.
WARNING
WARNING
Information
Version: 4/20/2018
Exercise caution when opening the system when the
engine is at operating temperature. The system is
pressurized! Danger of scalding!
Place a cloth over the cap and carefully
open.
Corrosive fluids
Danger of chemical burns
Wear personal protective equipment.
Ensure good ventilation.
Avoid contact with corrosive fluid.
If you do come into contact, wash off
immediately with plenty of warm water and
contact a doctor if necessary.
Cooling system overfilled
Stop filling the system as soon as the filler gauge is at
max. (Figure 7.1.6.4), overfilling will not be indicated.
Maintenance
7.1.6.3
7.1.6.4
911 GT3 Cup (991 II)
MY 2018
375
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