7 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHthermostat
Leading reported evidence
Install hotter 'stat
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
From personal experience with front engined water cooled cars ,(but not the Porsche cars in question),I have always thought that they are overcooled in general & always fitted a hotter 'stat to improve performance/efficiency.
Leading evidence: 'Install hotter 'stat' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Install hotter 'stat' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
For £50 I think it's crazy not to do this, especially as Hartech say it's the most important protection (after good oil, regularly changed) you can fit.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
I realise that Hartech have carried out a great deal of research and feel that it shows the benefits of such a modification, but we have used Autostrasse for 16 years, so I trust their judgement and guidance.
Run on a possibly still closed or partially closed thermostat
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
A lower thermostat rating means that the whole cooling system is available earlier where there is risk from localised potential overheating where say the engine is still running on a possibly still closed or partially closed thermostat.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Install hotter 'stat
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
From personal experience with front engined water cooled cars ,(but not the Porsche cars in question),I have always thought that they are overcooled in general & always fitted a hotter 'stat to improve performance/efficiency.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
For £50 I think it's crazy not to do this, especially as Hartech say it's the most important protection (after good oil, regularly changed) you can fit.
Run on a possibly still closed or partially closed thermostat
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
A lower thermostat rating means that the whole cooling system is available earlier where there is risk from localised potential overheating where say the engine is still running on a possibly still closed or partially closed thermostat.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
I realise that Hartech have carried out a great deal of research and feel that it shows the benefits of such a modification, but we have used Autostrasse for 16 years, so I trust their judgement and guidance.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
7 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Porsche Club GB: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T105141Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hi all. I'm pretty sure this has already been covered but I cannot find a thread relating to it. Is the lower opening temperature thermostat a worthy mod or just another ott precaution to make people sleep a little easier re our fragile engines ? Have read about it but would appreciate some feedback from those in the know.
Our 2002 (MY2003) 996 C2 is about to have a service at Autostrasse, and when I rang to book, I asked that question and was told that they felt it an unnecessary action. They feel that the cooling system produces such high pressures to circulate the fluid, that a thermostat opening at a different temperature is not necessary. I realise that Hartech have carried out a great deal of research and feel that it shows the benefits of such a modification, but we have used Autostrasse for 16 years, so I trust their judgement and guidance.
Hi Simon
There has been lots of discussion about it with various opinions see link below.
https://www.porscheclubgb.com/forum/tm.aspx?m=890015&high=low+temp
don't get to paranoid about it,
hope that helps
Kind regards
Andy
Thanks guys. No paranoia, have had the car a year now and all is sweet but its interesting to hear about any worthy low(ish) cost mods that can improve reliability.
In my view,the physics says that having a pressurised cooling system with a chemical /water mix increases the boiling point of the coolant such that it stays in liquid phase-circulation is effected by the coolant pump.
A lower thermostat rating means that the whole cooling system is available earlier where there is risk from localised potential overheating where say the engine is still running on a possibly still closed or partially closed thermostat.
From personal experience with front engined water cooled cars ,(but not the Porsche cars in question),I have always thought that they are overcooled in general & always fitted a hotter 'stat to improve performance/efficiency.
However the "enclosed " nature of the Porsche engine seems to have changed that characteristic.
Just my opinion ,of course.
For £50 I think it's crazy not to do this, especially as Hartech say it's the most important protection (after good oil, regularly changed) you can fit.
One argument that favours the lower temp thermostat is that the bore scoring problem seems more prevalent in larger capacity engines. These will produce more power and hence more heat.
Offsetting this heat increase with a lower 'ambient' temperature must be a good thing.
Of course, doing this modification after 100k miles might be a little late in the day ...
This is a source reference. Confirm exact model applicability in the original material.
