10 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHService Schedule, Miles, Oil..
Leading reported evidence
Replace no components
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
No components were changed for the 04 MY cars, (except the battery I think).
Leading evidence: 'Replace no components' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Lubricate properties compared' (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
24 month oil changes are for cars that are used on frequent long distance runs.
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
They are very resistant to breakdown of lubricating properties compared to mineral oils which really needed 12 month changes.
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
24 month oil changes are for cars that are used on frequent long distance runs.
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 · Original poster
Less frequent oil change combined with shorter trips/less use - the weekend car.
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
If you do short trips or live in dusty areas, they say oil changes must be every 12 months, so the usage you outline would require oil changes every 12 months.
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
If you do short trips or live in dusty areas, they say oil changes must be every 12 months, so the usage you outline would require oil changes every 12 months.
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 996 is older than the 2 year oil change option so don't have access to to that version of handbook, but I would be surprised if the hand book didn't have a similar duty cycle clause.
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.
10 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
911uk: 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
Evening all 8)
So 996 service intervals changed in 2003 to 12k/24 months whichever is sooner.
On that basis many of the average to low mileage examples may well have only had the oil dropped every 2 years.
Less frequent oil change combined with shorter trips/less use - the weekend car. Are these examples more prone to bore score/engine related issues :?:
Were there any actual uprated components developed in the '53 onwards models?
:dont know:
No components were changed for the 04 MY cars, (except the battery I think). It was thought that modern oils could last longer.
It would be interesting to have a 2yr old oil sample tested by Millers to see how effective it stil is.
Interesting Alex, did they report how far down the line?
I'm assuming the failure would be a few years in :?:
As bore score apparently is more likely than IMS failure do you think the same pattern would be likely??
So by that reckoning regarding oil technology, a '53 onwards which had been serviced annually or sooner (regardless of the low/ave miles) with quality oil would be less likely to suffer engine issues or is it more likely down to drive cycles or both??
My last 2 daily drivers (Both VAG group cars) have a duty cycle clause in the hand book and the on board computer. If you do short trips or live in dusty areas, they say oil changes must be every 12 months, so the usage you outline would require oil changes every 12 months. 24 month oil changes are for cars that are used on frequent long distance runs.
My 996 is older than the 2 year oil change option so don't have access to to that version of handbook, but I would be surprised if the hand book didn't have a similar duty cycle clause.
I'm with you on this Robertb. There have been step changes in oil technology which were mostly Synthetic oil. They are very resistant to breakdown of lubricating properties compared to mineral oils which really needed 12 month changes.
Whilst the synthetic oils would maintain its lubricating properties, the problem of extended service schedules is the particles and combustion contaminants that build up in the oil. Less stressed duty cycles produce less of these hence being able to extend the oil change schedule.
I have a Dec 2004 996 C4S Manual, I change the oil every 3000 miles and have it serviced every 24 months, I've had the car 4 years and done 11000 miles, forget what the book says, just change it every 3000, you know its done then, it costs about £45 and takes about 20 minutes.
All makes sense especially the drive cycle requirements :thumb:
Common sense should prevail and I know plenty of (inc. non-pork) drivers who insist on an annual oil change regardless of the manufacturers schedule.
Vehicle manufacturers also needed to demonstrate economy with less frequent or shorter services/inspections.
I just wonder if many of the bore score casualties were those 996's which were serviced every other year.. :dont know:
I see annual oil changes as a very reasonably-priced
insurance
policy against a big bill. Do the middle one yourself and they're at most about £120, even with the best Millers/whatever.
This is a source reference. Confirm exact model applicability in the original material.
