So I topped it up with Porsche coolant and it's been absolutely fine since. I've just replaced the radiator cap with the revised one that ends in 04. Hopefully that was just a one off
Thanks guys.
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Porsche Boxster S Type 986
Bi-xenon Headlight Upgrade | 987 S 18" Anthracite Alloys | Android Head Unit | 5000k 55w HID's | 5000k Cree DRL's | 5000k Cree number plate lights | Cree LED Indicators | One-touch roof operation | Bypass exhaust pipes | Parking sensors | Ambient footwell lighting
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