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Synthetic Oil Advice

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6 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHSynthetic Oil Advice

Reported or suspected cause

latter

Reported cause

No successful repair reported for this finding.

1
Identified cause
0
Suspected cause
0
Reported fixes
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 report identifying a cause
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.

Reported cause

I was under the impression that it was the latter.

Synthetic Oil Advice
Frequently discussed work

Fill " and now

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

Mobil 1 has a "new" (USA) 0W-40 which is the current "factory fill" and now used by Porsche for oil changes.

Synthetic Oil Advice
Read full discussion summary

Leading evidence: 'latter' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'latter' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Fill " and now' (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.

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1 matching discussions · 6 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Use by porsche

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

Mobil 1 has a "new" (USA) 0W-40 which is the current "factory fill" and now used by Porsche for oil changes.

Synthetic Oil Advice

Fill " and now

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

Mobil 1 has a "new" (USA) 0W-40 which is the current "factory fill" and now used by Porsche for oil changes.

Synthetic Oil Advice

Recommend '99 c2

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

I just took delivery of an '02 C2 and the owner's manual recommends 15W50 in areas where the ambient temperature is 50 deg., this is the same as was recommended for my '99 C2

Synthetic Oil Advice

Replace weight)

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

Same price per quart as 15-50 (the previous usual Porsche oil change weight).

Synthetic Oil Advice
Frequently discussed actions (7)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Fill " and now

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

Mobil 1 has a "new" (USA) 0W-40 which is the current "factory fill" and now used by Porsche for oil changes.

Synthetic Oil Advice

Recommend '99 c2

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 just took delivery of an '02 C2 and the owner's manual recommends 15W50 in areas where the ambient temperature is 50 deg., this is the same as was recommended for my '99 C2

Synthetic Oil Advice

Replace weight)

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

Same price per quart as 15-50 (the previous usual Porsche oil change weight).

Synthetic Oil Advice

Use 15-50

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 been using 15-50 for years, but now they have weight ranges I don't know much about (e.g., 0-30).

Synthetic Oil Advice

Use 5-50 mobil one synthetic

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 · Original poster

I've been told to use 5-50 Mobil One synthetic.

Synthetic Oil Advice

Use by porsche

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

Mobil 1 has a "new" (USA) 0W-40 which is the current "factory fill" and now used by Porsche for oil changes.

Synthetic Oil Advice

Use car

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

On oil weights, (but not necessarily tire pressures) I think I'd follow the recommendation in the owner's manual; sticking with Mobil 1 and trying to figure out which weight range to use by considering my local ambient temperature range and how I'd be using the car.

Synthetic Oil Advice
Reported and suspected causes (1)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

latter

No successful repair reported for this finding.

1
Identified cause
0
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that report identifying a cause
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.

Reported cause

I was under the impression that it was the latter.

Synthetic Oil Advice
Coverage and how to read this overview

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.

6 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: 20261026T213932Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I'm about to become a proud owner of a 2000 C2. It has 3700 miles on it and I would like to start our relationship with a fresh oil change. I've been told to use 5-50 Mobil One synthetic. I would appreciate all comments and opinions. Also, if anyone knows of a reputable independent porsche shop in the SF Bay Area, info on that is welcomed as well.

POST 2Original post

I didn't even know there was a Mobil 1 in 5-50 weight. I've been using 15-50 for years, but now they have weight ranges I don't know much about (e.g., 0-30). When I read the back of the container, they all seem to say about the same thing. On oil weights, (but not necessarily tire pressures) I think I'd follow the recommendation in the owner's manual; sticking with Mobil 1 and trying to figure out which weight range to use by considering my local ambient temperature range and how I'd be using the car. If there really is a 5-50, it sounds perfect for a wide range of conditions.

POST 3Original post

Mobil 1 has a "new" (USA) 0W-40 which is the current "factory fill" and now used by Porsche for oil changes. You can buy from your nearest Mobil 1 "jobber" (wholesaler) as I have not seen this weight sold retail. Same price per quart as 15-50 (the previous usual Porsche oil change weight). Van

POST 4Original post

Van, Is the 0W40 being used in all Porsche engines or just the 996 Turbo? I was under the impression that it was the latter.

POST 5Original post

I just took delivery of an '02 C2 and the owner's manual recommends 15W50 in areas where the ambient temperature is 50 deg., this is the same as was recommended for my '99 C2

POST 6Original post

Viken: Am advised that the Mobil 1 0W-40 is for non and turbo new engines. The Mobil 1 0w-40 bottle has "for European autos" and meets a specific Mercedes rating. The local P-car dealerships in Chicago are installing this on oil changes. If I recall, before Porsche and Mobil hooked up, the factory fill was a 5W-40 Shell synthetic only available in Europe. I'm doing a change this weekend--visually, it's quite "runny"--definitely thinner than 15-50--may help early cold start valve gear "chatter." Van

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