[svandamme]

can you in 10 minutes?
What about to the radiators..won't you get pockets there behind thermostats?
I would think at any time that built in bleed valve remains a must after some driving to warm up the engine.

So it's not that big of a time gain.. and not worth investing the money if you don't do this on a weekly basis. which i doubt any DIY porsche mechanic does.