How much coolant needed for Boxster S with Tiptronic Trans?

[KRAM36]

Getting ready to put a different water pump and low temp stat on my Boxster S with Tiptronic Transmission. I want to flush the system, but I'm not sure how much coolant I will need since I have the Tiptronic Trans. Can't find my Porsche manual either and 6 pages of searching Antifreeze, I could not find the amount needed.

So if someone would be kind enough to tell me how much coolant I need, it would be greatly appreciated.

Will be using Porsche band coolant and distilled water.

Thanks!

[NewArt]

The tip requires an extra litre of coolant. The Boxster S requires 22 litres (about 6 gallons) of coolant. So you will need 3 gallons of pure mixed with 3 gallons distilled water. Airlift system highly recommended.

[Flavor 987S]

Hope you are using an OE Porsche water pump. Not some aftermarket one with a metal impeller.

[KRAM36]

Thank you Gentlemen.