[Dmitry at Pelican Parts]

Originally Posted by porschedavid

A lot of people on forums say you can bleed it old fashion way but it does change the fluid in the pump.Some people even say some garages don't bleed it the proper way

I based my response on Wayne's diy tech article - other members will likely chime in with their expertise as well.

Link: https://www.pelicanparts.com/techarticles/Porsche-996-997-Carrera/48-BRAKES-Bleeding_Brakes/48-BRAKES-Bleeding_Brakes.htm