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Would you be so kind as to shoot a few pictures of the areas I have circled? I am planning on doing a full flush and refil on my C2S here shortly. Getting to the lowest points in the front portion of the cooling system should be pretty simple. But I've been wrong before, a picture or two would be awfully nice. That's assuiming your "project" requires that these connections even get exposed when you pull the front plastic.
BTW, I'm pretty sure the installation of this Center Radiator will force you to open connections that'll probably drain a significant amount of coolant. Either that or trying to contain it might be more work than it's worth. In any case, you'll want a few tools: See pictures below. First, a Coolant Vacuum Refill Kit (Google is your friend) an adapter to Porsche's version of a Radiator Cap, and an Air Compressor large enought to operate this set-up. Second, you'll need/want a Scan Tool (Ex: Autel MaxiCOM MK900TS) That will allow you to bleed the Cooling System. It allows you to manually operate the Coolant Control Valves. Which is actually important. Third, you'll evidently want a new "Bleed Valve" on hand, or so I've been forewarned. Aparently it has a tendency to fail when it is operated. Such as when refilling the Cooling System. P/N 7P5121671A.
All images inversely sized in the order of their importance. I've been led to blelieve that these two connecting hoses are the lowest point in the front portion of the cooling system. For the purpose of periodic cooling system maintenance. Coolant Bleed Valve Location of the C oolant Bleed Valve UView Airlift UVW-5500000 You'll want an adapter. This one works.
Thanks for the insight. I have an Autel and a PIWIS setup, so that is covered. I’ll need to borrow somebody’s air compressor though. I will try to get you pictures of the areas you highlighted when I have the front end disassembled; I’m still waiting on a lot of parts from Germany. Since I’m replacing the front Carrera S fender liners with .2 GT3 liners, it should expose the areas of interest.
Last edited by M3Inline6; Jun 4, 2026 at 04:20 AM.
I keep my car in the garage during the winter, do not drive it in freezing temps, and do not drive it really hard in the summer so I think the need for a timely coolant flush in my case is greatly diminished.
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