911 GT2 (996) F6-3.6L Turbo (2003)
16. Unscrew spring band clamp or hose clamp on the coolant expansion tank.
17. Prepare auxiliary hose (internal diameter) and a length of approx. 1 metre.
18. Pull off disconnected coolant hose, push auxiliary hose onto the supports and collect coolant in a container.
19. Disconnect electrical plug connection from the sensor for the coolant-level indicator.
20. Undo the hexagon nut.
21. Pull coolant expansion tank out of the guide rails and remove rearwards.