986 boxster milky coolant

[Perfectlap]

I feel like I post this in every new car thread but compression and leak down test...

or one better, take it to your local Porsche dealer, one with a solid service dept. and ask them to do a full top to bottom diagnostic of the car.
I had this done at the 50K mile mark and the report that came back was exceptionally specific, down to which coil packs needed replacing.
I think I only paid $150 for that report. Money well spent.