there is also a 20 minute clutch calibration that you can run after the fluid fill, that i swear made my pdk an absolute weapon. not sure if that was from the fluid change tho or the calibration but after doing the clutch fluid flush and running that calibration, my pdk was like brand new. This calibration can only be run by PIWIS, (and i think a couple other very expensive code readers) though so if you have access to a PIWIS i highly recommend running that calibration right after you flush the fluid. It runs for about 20 minutes with the engine running and you will hear the PDK making a bunch of weird noises while revving the engine at different intervals. it will walk you through every step, it was very cool to see.

some people say this calibration is only necessary to run if you replace your pdk, but after doing it on my own car, i think its worth to do.

btw you can do the clutch fluid flush and the gear oil flush without a piwis. there are many DIY's on here that show you how to do that if you dont have a piwis. When my piwis failed on the bleeding part of the clutch fluid, i just started the car and ran it through the gears on the lift, then was able to add a little more clutch fluid (in the end i used 3 bottles (3L) of the porsche OE clutch fluid) without removing/replacing the pan. if you replace the pdk pan/filter it will take around 5-6 liters.