Draining Coolant

→ Ventilate the work area well.

→ Never ingest or inhale.

→ Read specific information on the Hazard Sheet.

→ Wear personal protective gear.

→ Do not smoke, eat or drink in the work area.

→ Let the fluid cool down.

→ Wear personal protective gear.

→ Disconnect power supply to the drive motor of components or to the battery.

→ Do not start the engine after relieving the system pressure.

→ Fill the cooling system correctly and bleed it before starting the engine.

Information 

• The coolant filled in at the factory is intended to suffice for the entire service life. As long as the coolant is not contaminated by foreign bodies or other fluids it need not be changed. 
• Different coolant additives must not be mixed and doing so may damage the cooling system. Only use original Porsche coolant additives. 
• The coolant must be set to antifreeze protection of -37 °C. This corresponds to a mixing ratio of 50: 50 (coolant additive: water). This mixing ratio provides optimum corrosion and antifreeze protection. 
• Coolant additives, coolants and cleaning agents must be disposed of according to the respective, applicable national laws. 
• Seals in the cooling system must be replaced by new ones following disassembly. 

1. Open maintenance cover.
   Fig 1: Removing Maintenance Cover

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2. Carefully open the lid on the coolant reservoir. Unscrew the lid by turning it anticlockwise.
   Fig 2: Identifying Lid On Coolant Reservoir

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3. Remove the front engine guard. → Removing engine cover (design cover)
   Fig 3: Identifying Engine Guard

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4. Drain the cooling system. → Open the lowest coolant hose, drain the coolant into a container and dispose of it according to the applicable national laws if no longer required. Allow cooling system to drain.
   Fig 4: Draining Cooling System

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   1. 4.1. V6  => Detach bottom coolant hose on coolant pipe at the frame. -arrow- 
      Fig 5: Locating Coolant Hose

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   2. 4.2. V8  => Detach bottom coolant hose on the radiator. To do this, undo clip on Henn coupling and pull off coupling -arrow Kuhlmittelschlauch von top gesehen-  . Refit clip on Henn coupling. If necessary, pull off coolant hoses on oil/water heat exchanger and drain off remaining coolant -1 and 2-. V8 Turbo  => Remove boost pressure pipe on the right-hand side. -1- 
      Fig 6: Locating Coolant Hose On Radiator

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      Fig 7: Identifying Oil Cooler

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      Fig 8: Identifying Boost Pressure Pipe

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5. Drain the rest of the coolant as required.
   1. 5.1. Screw adapter K65 onto the coolant reservoir.
      Fig 9: Identifying Coolant Reservoir Adapter

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   2. 5.2. Adjust air connection (workshop connection) to 0.5 bar overpressure using a pressure reducer. → Connect pressure hose to workshop connection and route it, but do not connect to the adapter K65. 
      Fig 10: Locating Pressure Reducer

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   3. 5.3. Get a second worker to hold the disconnected coolant hose into the collecting container
   4. 5.4. Connect compressed air connection to adapter K65 on the coolant reservoir. Coolant shoots out of the coolant hose.  Blow out cooling system.
   5. 5.5. Leave air connection connected until there are only drips emerging.
6. Refit disconnected coolant hoses.