29 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHJust remarkable
Leading reported evidence
Replace from original spec
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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Discussions that performed work without a confirmed outcome
1
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Performed · outcome unconfirmed
Heat cycle an a new engine block or cylinder heads, 3,000 times and then measure it, it will have changed from original spec.
Leading evidence: 'Replace from original spec' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check engine is still there' (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.
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1
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Performed · outcome unconfirmed
3K mile oil changes and worn items replaced immediately.
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
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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
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Suggestion
It's a CEL telling you to Check the engine is still there after so many miles
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.
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Suggestion
Frequent oil changes, making sure you use good fuel and that the fuel delivery system is clean.
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.
29 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: 20261027T005001Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Yup - it's
@911user
. He posts here sometimes in the 40AE Registry thread. There was even an article about him and the car in one of the recent Panorama magazines. Fantastic read. Word is he's been running Mobil 1 0-40
I always wonder about what really is the big factor that helps us get trouble free high mileage cars.
One thought is whether or not the car had a "gradual warm up" to oil warmed up from start of life. I think this little known fact may result in longer lasting engines.
What do you guys think?
Most extremely high mileage cars that I've seen were owned by people who travelled long distances by car for work. (So mainly highway miles with few short trips)
Also those car were meticulously maintained.
3K mile oil changes and worn items replaced immediately.
A warning light would have been immediately diagnosed and fixed.
Is the car above still owned by the owner that put the bulk of miles on it?
The CEL makes me wonder if it's not owned by someone else now.
Is the car on it's original engine?
I rarely open up my Porsche Club magazine so I didn't see the article.
I'd love to read the article if anyone know which issue...and if I haven't already tossed it.
I believe he's the second owner and has done most of the miles. As far as I know it's still on the original X51 M96 motor. You can find the full article in the October 2021 magazine. There was also a nice story about a red C4S in a more recent number.
Thanks!
Yep, October 2021 was still wrapped in the plastic.
I just don't normally seem to find articles that I'm interested in.
So I rarely open them up.
They often get thrown away still wrapped in plastic.
Thanks for posting the article...now to search for the red C4S in the more recent issue...when I have some spare time.
Most engines really can run forever if they are never shut off except for maintenance. Most wear is on startup, so that�s why people looking to buy high mileage cars should look at the DME/ECU clock to determine miles vs. engine hours. If the ratio between miles:hours is high (let�s say average speed is above 40mph (40 miles per engine hour), there�s a good chance that car was highway-driven. Lol, this doesn�t apply to tracked vehicles. Of course, a quick chat with previous owners would be the easiest way to find out if the car was a highway car.
then I bought the 40th, as it was a lease return with 50,000 miles. To this day, burns No oil, and still gets 25-29 MPG.
IMS was changed at 345,000
and didn't need to be! Just lots of oil changes, lots of new tires, 3 new windshields, lots of normal wear things. Super reliable car
@911user posted this awhile back - in the AE car thread - post #1469
https://rennlist.com/forums/996-foru...d-faq-147.html
What they're not telling you in this photo is that he has it floored
. Sure, the old girl has lost a step or two, but she's still looking fine!
This is seriously impressive. My experience with both of my 996's is that they are very reliable when well maintained and driven often.
.
70 percent of wear happens at start up. Then at low rpms you have mixed lubrication and there you have some wear also. When you get to full film lubrication or hydrodynamic lubrication where the metal surfaces are completely separated by the oil film almost 0 wear. Maybe someone in the forum knows the tolerances of our engines and can tell us what the rpm is for that. Anyway I never use drive thrus. I personally had two super high mileage cars. A 1981 mercedes 300 sd went over a million miles. My father in law traded it in and I was told the car is still running in Victoria Texas, the second a 1985 bmw 735i, I sold the car with over 500,000 miles. I used to drive old cash cars most. Yes I always had a niece one, but that one was almost never driven. Frequent oil changes, making sure you use good fuel and that the fuel delivery system is clean.
Thanks, I was able to find some pictures that way. His turbo is Orient Red and very stunning. His collection is quite impress with a nice 928 as well, and he clearly takes great care of them considering his impressive mileage on this 40AE.
Exceptions dont make the rule.
When you say this, what kind of failure are you referring to? Are you suggesting startups wear engine parts other than bearings and piston rings as well?
I ask because I often see blanket statements about many things in life but no real explanation. Just curious what you mean.
I�m not referring to any specific failure. I�m just saying there is a huge difference between the guy who never drives his car, but starts it up once a week for 5 mins to idle (super low miles) versus the guy who drives across the country.
Take any car, drive it across the country over and over again, and it will last 400,000 miles most likely.
Yes, there are many engine parts other than pistons rings and bearings that can wear out. Engines have over a hundred moving parts, but even static parts can wear out. Heat cycle an a new engine block or cylinder heads, 3,000 times and then measure it, it will have changed from original spec.
I�m not trying to take away from the high mileage 996s out there. I�m just saying that driving type matters, just as care of the car matters when it comes to comparing two seemingly similar cars.
This is a source reference. Confirm exact model applicability in the original material.
