5 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHCoolant Additive
Leading reported evidence
Replace ."
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
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0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
Now I have to admit this goes *against* what Porsche says: "The coolant filled in at the factory is intended for lifetime cooling and thus need not be changed."
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
I've never used them but if you want you can find/buy a coolant test strip to check the coolant's condition and decide if you want to leave it in service or change it.
Leading evidence: 'Replace ."' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check coolant's condition and decide if you want' (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.
Replace with new anti-freeze and water and the shop
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
My I just every 4 to 5 years change the stuff, well, have it changed, replaced with new anti-freeze and water and the shop uses one of those nifty vacuum systems to ensure no air pockets.
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 use Redline in my cars with no problems and my cars run a few degrees cooler.
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 use Redline in my cars with no problems and my cars run a few degrees cooler.
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
I've never used them but if you want you can find/buy a coolant test strip to check the coolant's condition and decide if you want to leave it in service or change it.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Check coolant's condition and decide if you want
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
I've never used them but if you want you can find/buy a coolant test strip to check the coolant's condition and decide if you want to leave it in service or change it.
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 · Original poster
I too am not crazy about coolant additives or engine oil additives for that matter, but I thought I could give it a little help to run cooler and lubricate while in there.
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
Now I have to admit this goes *against* what Porsche says: "The coolant filled in at the factory is intended for lifetime cooling and thus need not be changed."
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
The radiators, heater core, and the oil/water heat exchanger are made of very thin wall aluminum tubing and do not have much extra thickness to feed the acid that can build up in coolant past is change by date.
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
My I just every 4 to 5 years change the stuff, well, have it changed, replaced with new anti-freeze and water and the shop uses one of those nifty vacuum systems to ensure no air pockets.
Replace with new anti-freeze and water and the shop
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
My I just every 4 to 5 years change the stuff, well, have it changed, replaced with new anti-freeze and water and the shop uses one of those nifty vacuum systems to ensure no air pockets.
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 · Original poster
I too am not crazy about coolant additives or engine oil additives for that matter, but I thought I could give it a little help to run cooler and lubricate while in there.
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.
5 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 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: 20261026T174436Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Want to add "Purple Ice" coolant additive but I don't know where I should drain off the required amount so as to not over fill. I guess I thought I knew,but I really don't after reevaluating the situation!
I've heard of Royal Purple being incompatible with some coolants causing a "royal" gum up in the cooling system. This is well documented in the Mercedes forums. Redline Water Wetter is a better choice and recommended by our sponsors. I use Redline in my cars with no problems and my cars run a few degrees cooler. 996 included.
I was not aware of this potential hazard. I will confirm with the Manuf. and see what happens. I will also update when I find out.
Thanks for the heads up.
Why add anything?
I know no one cares anymore what Porche has to say on this matter, but from one factory manual I have Porsche says to not mix the coolant with any other coolant.
Just be sure the system is pressure tight (the cap can leak after some time) and I like to change the coolant every 4 to 5 years. Now I have to admit this goes *against* what Porsche says: "The coolant filled in at the factory is intended for lifetime cooling and thus need not be changed."
However, my limited experience is coolant loses some anti-corrosion protection over time and this can work on the water pump seal along with other critical cooling system components. The block will never corrode through but head gaskets, or radiators, or heater cores, even the oil/water heat exchanger can. The radiators, heater core, and the oil/water heat exchanger are made of very thin wall aluminum tubing and do not have much extra thickness to feed the acid that can build up in coolant past is change by date.
I've never used them but if you want you can find/buy a coolant test strip to check the coolant's condition and decide if you want to leave it in service or change it.
My I just every 4 to 5 years change the stuff, well, have it changed, replaced with new anti-freeze and water and the shop uses one of those nifty vacuum systems to ensure no air pockets.
Sincerely,
Macster.
More than anything to keep it cooler, but I guess I could just put in a lower degree T-stat. I too am not crazy about coolant additives or engine oil additives for that matter, but I thought I could give it a little help to run cooler and lubricate while in there. Might just change the fluid and move on. Thanks
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