986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - New Porsche AOS reading 5.3 WC

Oldcarguy · 01-26-2018, 02:33 PM

After replacing my ver.00 AOS with a new Porsche Genuine AOS ver.01 I was disappointed to find that the new AOS was still reading between 6.21 and 7.28 inWC. Pretty much what the old one was reading. Here’s my original thread:

If it ain’t broke, don’t fix it??

Not trusting my $35 manometer, I ordered a Fieldpiece manometer. With the Fieldpiece my new AOS is reading in the high fives cold and 5.32 - 5.41 warm. The cheap manometer is off by ~1 inWC

JFP indicated that anything above 5.0 warm is candidate for replacement. The Pelican article says 4-7 is ok. I think I’m going to call it good at 5.32, watching for symptoms and monitoring WC regularly. I really don’t want to go back in and risk breaking the AOS plastic squeeze clamps unless I really need to.

What do you guys think???

Sent from my iPad using Tapatalk

01-26-2018, 02:33 PM	#1
Oldcarguy Registered User Join Date: Feb 2017 Location: North Eastern US Posts: 646	New Porsche AOS reading 5.3 WC - opinions?? After replacing my ver.00 AOS with a new Porsche Genuine AOS ver.01 I was disappointed to find that the new AOS was still reading between 6.21 and 7.28 inWC. Pretty much what the old one was reading. Here’s my original thread: If it ain’t broke, don’t fix it?? Not trusting my $35 manometer, I ordered a Fieldpiece manometer. With the Fieldpiece my new AOS is reading in the high fives cold and 5.32 - 5.41 warm. The cheap manometer is off by ~1 inWC JFP indicated that anything above 5.0 warm is candidate for replacement. The Pelican article says 4-7 is ok. I think I’m going to call it good at 5.32, watching for symptoms and monitoring WC regularly. I really don’t want to go back in and risk breaking the AOS plastic squeeze clamps unless I really need to. What do you guys think??? Sent from my iPad using Tapatalk __________________ Rgds, Fred #317 550 Spyder Anniversary Edition 2004 Boxster S, 3.8L Flat Six Innovations engine, PSS9s, etc, etc . . . The contents of my posts are for entertainment only. As confirmed by my many motor sports fails, I am not qualified to give product endorsements or mechanical advice Last edited by Oldcarguy; 01-26-2018 at 02:44 PM.