7 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHBest Oil/Additives for 997
Leading reported evidence
Replace would be fine
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
The results basically said that running all the fluids twice as long before the next oil/filter change would be fine.
Leading evidence: 'Replace would be fine' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace would be fine' (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 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
The results basically said that running all the fluids twice as long before the next oil/filter change would be fine.
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.
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
I have the service records and it has always run Mobil 1 full synthetic.
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
I want to use the "best oil"and change it every 3000 miles or so.
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.
Pelican Parts: 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: 20261027T033922Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I just bought a 2005 Carrera 997 with 3.8L engine. It has 67,000 miles and runs great. I have the service records and it has always run Mobil 1 full synthetic. I want to use the "best oil"and change it every 3000 miles or so. What is the best oil to run in these engines? How about additives?
The "best oil additive" is rather simple:
None
. If you run good oil, you don't need additives. As for which oil; that is a subject that starts wars and ends friendships............
Oils: What motor oil should I use? Which oil is best for my Porsche or aircooled engine?
Then scroll down to the section titled
What oil should I use in my newer Porsche requiring a "Porsche approved" oil, like the M96 or later Porsche engine
Straight from the master Charles Navarro..... And you won't loose any friends.
And here:
http://forums.pelicanparts.com/porsche-911-technical-forum/367300-ultimate-motor-oil-thread-why-we-hate-cj4-sm-oils.html
And here:
http://www.911uk.com/viewtopic.php?t=85575
And most importantly here (directly related to your (and mine) C2S):
http://www.hartech.org/docs/buyers%20guide%20web%20format%20Jan%202012%20part% 205.pdf
Happy reading!
Will try to add some more later.
L
IMHO changing the oil every 3000 miles (unless it has been 12 months prior) is a waste of time, money, oil, etc.
I track my car, and ran it with ~250 miles of tracking @ 125 to 145MPH, most of it at 90 to 100°+, and ~750 street miles . Sent in my oil samples (engine, trans, and differential) to Blackstone for an analysis. The results basically said that running all the fluids twice as long before the next oil/filter change would be fine.
Contact Blackstone for a kit, send in your oil samples and let the results guide you to what you think is best.
+1. Stay away from additives and only use approved oil.
This is a source reference. Confirm exact model applicability in the original material.
