The coolant in the Porsche 2005 911 (997) leaked around the expansion tank. It looks like it's coming out from under the coolant cap. After reading it, I found out that older versions of the header were prone to crashing. So the first thing I did was replace the cover. It's only been a few hours but I think that fixed the issue. The cap fits very well, better than the one on the car (the one on the car ends in 02, this one ends in 04).
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