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Mobil 1

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

Discussion summary

YOUR RESEARCHMobil 1

Leading reported evidence

Replace /

Suggestion or failed attempt

No successful repair reported for this finding.

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Reported fixes
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Unsuccessful attempts
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Discussions
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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

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

Second, while Porsche says that when topping up approved oils can be mixed when possible the same oil should be used that was used for the last oil change/fill.

Original post Read captured discussion
Mobil 1
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Leading evidence: 'Replace /' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace /' (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

Replace oil

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

Or better yet, just change the oil with the same approved grade.

Original post Read captured discussion
Mobil 1

Replace there is no need

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

Now if you want to change to another approved oil at the next change there is no need to 'flush' the engine of the old oil.

Original post Read captured discussion
Mobil 1

Use 30 weight multi grade oil

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

You shouldn't use a 30 weight multi grade oil.

Original post Read captured discussion
Mobil 1

Use 40 weight oil and mix away

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

Use a 40 weight oil and mix away to your hearts content.

Original post Read captured discussion
Mobil 1
Frequently discussed actions (6)

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

Replace /

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

Second, while Porsche says that when topping up approved oils can be mixed when possible the same oil should be used that was used for the last oil change/fill.

Original post Read captured discussion
Mobil 1

Replace oil

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

Or better yet, just change the oil with the same approved grade.

Original post Read captured discussion
Mobil 1

Replace there is no need

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

Now if you want to change to another approved oil at the next change there is no need to 'flush' the engine of the old oil.

Original post Read captured discussion
Mobil 1

Use 30 weight multi grade oil

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

You shouldn't use a 30 weight multi grade oil.

Original post Read captured discussion
Mobil 1

Use 40 weight oil and mix away

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

Use a 40 weight oil and mix away to your hearts content.

Original post Read captured discussion
Mobil 1

Use last oil

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

Second, while Porsche says that when topping up approved oils can be mixed when possible the same oil should be used that was used for the last oil change/fill.

Original post Read captured discussion
Mobil 1
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: 20261026T225432Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Any problem with mixing multi viscosity Mobil 1 oil such as 5w 30 with 0w 30 in my 996 crankcase?

POST 2Original post

Nothing wrong with mixing, but this time of year in NC, you should be going to 5W40 (some prefer 0W40) or even 5W50, depending on your driving plans. Let's end this here before it turns into another oil thread.

POST 3Original post

You shouldn't use a 30 weight multi grade oil. Not designed for the car. Use a 40 weight oil and mix away to your hearts content. Or better yet, just change the oil with the same approved grade. i.e. 0w40 or 5w40.

POST 4Original post

curious why this idea came up in your mind? leftovers from other cars?

POST 5Original post

Personally, I don't like mixing oils. I'm not sure there is any scientific basis for that, but I can't see any upside to it and why take the risk. Agree that 30wt is not a good choice for these cars.

POST 6Original post

Quotes source post: 9421331

First 5w-30 is not any viscosity approved for use in your car's engine. Approved I might add by the maker of the car, and the engine: Porsche. Second, while Porsche says that when topping up approved oils can be mixed when possible the same oil should be used that was used for the last oil change/fill. Now if you want to change to another approved oil at the next change there is no need to 'flush' the engine of the old oil. All approved oils are miscible. You have a good selection of 0w-40, 5w-40 oils, and even at least one 5w-50 oil. I fail to see what you hope or expect to achieve over and above oil engineers/chemists have even if you confined yourself to approved oils. Sincerely, Macster.

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