Coolant Change Questions

[kjc2050]

Decided to change the coolant in my 13 year old, 27K mile 2000S, leading to a few questions:

• The old coolant appears greenish/brownish in color. It's never been changed. The new Porsche coolant purchased from Pelican is pink. Any reason for concern?
• The old, OE spring hose clamps seem to be in great shape... should I still replace them?
• How much coolant should I expect to get out of the system? ~4 gallons? More? Less?
• Any concerns about mixing the old and new coolant, if I don't get all of the old stuff out?
• Any other tips or tricks you want to pass along?

Thanks for your help!