Checking Cooling System; Coolant: Checking Level, Antifreeze Content And Leaks - Porsche 996 TT Repair Manual

03 Checking cooling system

Coolant: checking level, antifreeze content and leaks

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Coolant: checking level, antifreeze content and leaks
Note
The coolant filled in at the factory is intended for lifetime cooling and, thus, need not be changed. The
•
coolant must not be mixed with other coolants.
• Only original Porsche antifreeze should be used when changing or topping up the coolant.
1. Check antifreeze content: Open the lid on the coolant expansion tank and check the antifreeze content
with a frost protection testing device. If it is lower than −35 °C, it should be corrected accordingly.
2. Checking the cooling system for leaks: connect the cooling system test device with the adapter to the
coolant expansion tank and allow a test pressure of approx. 1 bar to build up. During the leak test on all
hose connections, check the tightness of the hose clamps and the condition of the coolant hoses.
3. Check cooling openings for external contamination: the cooling openings must not be excessively dirty. If
needed, clean these with a vacuum cleaner and a crevice nozzle made by the Kärcher company see
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