Cooling System Cleaned (After Oil/Coolant Mixing)

Cooling system cleaned (after oil/coolant mixing)











Special tools








Components of the radiator vacuum filling device

Draining coolant

Caution: Danger of scalding! Coolant can be extremely and pressurized. Wear suitable protective equipment. Carefully open the cap on the expansion tank.

1. Position the vehicle at the take-up points provided on a lifting platform..
2. Open the bonnet.

Note:
^ The coolant filled in at the factory is intended for lifetime cooling and, thus, need not be changed. This coolant must not be mixed with other coolants.
^ Only original Porsche antifreeze should be used when changing or topping up the coolant.





3. Open maintenance cover.

Caution: Danger of scalding!
^ Coolant can be extremely hot and pressurized.
^ Only open the cooling system when it is cold.
^ Wear gloves.





4. Carefully open the cap on the coolant expansion tank. Unscrew the cap in counterclockwise direction.
5. Open cap on the expansion tank and remove.





6. Remove underbody cover.





7. Remove the support plate under the radiator. To do this, loosen the 4 fastening screws.





8. Drain cooling system. Remove the drain plug from the radiator, drain the coolant into a container and dispose of it according to the applicable national laws if no longer required.
9. Fit a new drain plug on the radiator and tighten it.

Note:
^ The radiator cleaning agent provided must be approximately 2 liters more than the amount which has to be filled in.
^ The cleaning agent is mixed with water at a ratio of 50:50.

10. Fill the cooling circuit with the cleaning agent. To do this, mix 61 cleaning agent (Frostox R Spezial) with 6 L water and fill into the cooling circuit.
11. Start vehicle.
12. After the vehicle has been bled and the coolant temperature is > 80°C, let the stationary vehicle run at medium engine speed for at least 15 minutes.
13. Switch off engine.

Caution: Danger of scalding
^ Allow the coolant to cool down before opening the coolant circuit.
^ Coolant can be very hot.
^ Wear suitable protective equipment.





14. Slowly and carefully open the coolant expansion tank.





15. Unscrew the coolant drain plug on the engine and drain and collect the radiator cleaning agent. Disposal should be carried out according to the applicable national laws.
16. Use hot water to rinse out any oil which has adhered inside the coolant expansion tank.
17. Connect the hoses again and tighten the hose clamps.
18. Tighten the drain plug on the radiator.

Note: Points 1 to 9 must be repeated unto no more oil rises to the surface in the coolant expansion tank.

19. Fill the coolant circuit with water only and then bleed the cooling system according to the regulations.
20. Start engine.
21. After the vehicle has been bled and the coolant temperature is > 80°C, let the stationary vehicle run at medium speed for at least 15 minutes.
22. Switch off engine.

Caution: Danger of scalding
^ Allow the coolant to cool down before opening the coolant circuit.
^ Coolant can be very hot.
^ Wear suitable protective clothing.





23. Carefully open the coolant expansion tank and relieve the existing residual pressure.





24. Unscrew the coolant drain plug on the engine and drain the radiator cleaning agent.

Note: All hoses which have been removed during work on the cooling system must be replaced with new ones.

25. Remove hoses which have been pulled off connection fittings and replace with new ones.
26. Tighten the drain plug on the radiator.
27. Install the sheetmetal brace under the radiator. Tighten the 4 fastening screws to 23 Nm (17 ft. lbs.).





28. Fix the front spoiler to the sheetmetal brace.





29. Reinstall the engine guard.

Filling cooling system (includes bleeding)
1. Screw the cap adapter for the coolant expansion tank (K 60) onto the expansion tank.
2. Connect the flexible extension (Fz 100) to the cap.
3. Connect the vacuum pressure gauge of the bleeder tool to the flexible extension. When doing so, ensure that both shutoff valves are closed (positioned at 90° to flow direction).





4. Connect the Venturi nozzle to the vacuum pressure gauge.





Note:
^ The coolant quantity provided must be approximately 2 liters more than the amount which has to be filled in.
^ An antifreeze content of -35°C corresponds to a mixture of 50:50 (antifreeze: water).

5. Place a canister with a sufficient amount of coolant and with an antifreeze content for -35°C behind the vehicle near to the expansion tank.

Note: The bleeding process is completed more quickly if the canister is positioned at roughly the same height as the coolant expansion tank.

6. Push the filler hose -(5)- of the vacuum pressure gauge onto the canister connection. Lay the return line -(6)- from the Venturi nozzle to a second container (bucket).

Note: A hissing sound after connecting the compressed air supply is completely normal.





7. Connect the compressed air supply.





8. Open both shutoff valves on the vacuum pressure gauge until the transparent filler hose has completely filled with coolant.





9. Close the left shutoff valve (V1) on the vacuum pressure gauge and allow a vacuum to build up in the coolant circuit.

Note:
^ If no vacuum is generated (the pointer does not move to the green area), there is a leak in the cooling circuit.
^ Deformation of the rubber hoses of the cooling system is normal.
^ If the indicator of the pressure gauge is in the green area of the display scale, enough vacuum has been built up.
^ After both shutoff valves on the vacuum pressure gauge have been closed and the compressed air supply has been disconnected, the vacuum must not drop. If the vacuum drops within approximately 30 seconds, there is a leak in the coolant circuit.





10. When there is a sufficient vacuum in the cooling system (indicator is in the green area), close the right shutoff valve (V2) and then disconnect the compressed air supply.
11. Reopen the left shutoff valve (V1) on the vacuum pressure gauge. The cooling system is then filled.





12. When there is no trace of vacuum present or the coolant is no longer drawn from the canister, open the right shutoff valve (V2).
13. Then remove the complete filling tool (including the cap K 60).





14. If necessary, fill the coolant expansion tank with coolant to the max marking.

Note: The system can be checked for leaks, if necessary.





Connection of the leak tester





15. Screw on the sealing cover of the expansion tank.
16. Close the maintenance cover.
17. Conduct a test drive with the vehicle, check the fluid level in the expansion tank after the coolant circuit has cooled again and, if necessary, fill up to the maximum marking with coolant.