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Old 09-02-2017, 01:11 PM   #1
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Yes I have no doubt it's coming from the overflow. The coolant cap and the purge valve are in the overflow formed into the top of the expansion tank. With the cover off you should be able to open the trunk and see the coolant leaking. Just don't attempt to tighten when leaking!
Do you have a NAPA nearby? I think they carry the Hengst filter but I'd put a WIX/NAPA gold in if they have it.

Last edited by 911monty; 09-02-2017 at 01:22 PM.
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Old 09-02-2017, 01:22 PM   #2
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Napa is not answering their phone and they close soon.
Oreilly has this Wix: https://www.oreillyauto.com/detail/wix-5291/filters-16470/oil-filter-16731/oil-filter-12090/oil-filter/57211/4836299/2002/porsche/boxster?q=oil

would this be a better choice than the STP one?
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Old 09-02-2017, 01:24 PM   #3
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Quote:
Originally Posted by robdelorenzo View Post
Napa is not answering their phone and they close soon.
Oreilly has this Wix: https://www.oreillyauto.com/detail/wix-5291/filters-16470/oil-filter-16731/oil-filter-12090/oil-filter/57211/4836299/2002/porsche/boxster?q=oil

would this be a better choice than the STP one?
Yes. WIX is the one of the best.
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Old 09-02-2017, 01:27 PM   #4
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I'm going to get it and the oil now.
Should I let the oil drain overnight?
Does that really make a difference?
You have been most kind.
Thank you!
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Old 09-02-2017, 01:32 PM   #5
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You're welcome! Just let the oil drain for 30 min to an hour.
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Old 09-02-2017, 01:34 PM   #6
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Ok thanks!
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Old 09-02-2017, 03:57 PM   #7
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Update:
I just took the car out to get new oil, a filter, and run a few more errands.
Along the way each time I stopped I sat down next to the ground near the passenger rear tire to listen for hissing or dumping coolant. I did not see or hear anything.

I live at the top of a steep canyon and as I was driving up the canyon the temp gauge rose a bit higher than it's (formerly?) normal temp of around 180. This time it was more like 190. It is a very hot and humid day here in Socal so that may account for some of it.

Anyhow, as soon as I pulled into the garage, guess what? Hissing and coolant started dumping out of the overflow. I had the wire in the up position the entire trip and I could hear air escaping from that valve. The coolant level in the tank is now is down to a bit more than 1/3 (from dead in between max and min) but certainly lower than it was when I started. At one point, while I was doing my errands I saw that the entire coolant bottle looked like it was full. It was almost all the way up to the black plastic.

I'm new to this car and new to all this. I'm learning what "normal" is from this forum.

Please let me know what's going on and if this is all part of the bleeding process or if I do in fact have some sort of coolant or circulation issue going on.

The oil is draining and looks pretty black to me. This is probably from the meltdown last weekend and it had been changed less than 1k miles ago.

Thanks in advance. This ought to be called Porsche University Online. I'm really learning a lot here!
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