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Oil Choice

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

Discussion summary

YOUR RESEARCHOil Choice

Leading reported evidence

Use castrol 5w-50 in my '03 c4s based

Performed · outcome unconfirmed

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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 performed work without a confirmed outcome
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

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Performed · outcome unconfirmed

I use Castrol 5W-50 in my '03 C4S based on some viscosity breakdown info I'd read at the L N site.

Oil Choice
Frequently discussed work

Recommend choice of oil in regions

No successful repair reported for this finding.

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Discussions that contain suggestions
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Suggestion · Original poster

What I didn't see was a thread specifically dealing with the recommended choice of oil in regions that get real winter weather!!

Oil Choice
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Leading evidence: 'Use castrol 5w-50 in my '03 c4s based' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Recommend choice of oil in regions' (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 · 31 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Use mobil 1 0w-40

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

For me, I may switch oil at some point, but so far I've used Mobil 1 0W-40 and change the oil 2x a year.

Oil Choice

Recommend choice of oil in regions

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 · Original poster

What I didn't see was a thread specifically dealing with the recommended choice of oil in regions that get real winter weather!!

Oil Choice

Recommend 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

0W-40 is Porsche recommended oil.

Oil Choice

Replace choice of 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 · Original poster

Now that it is in Pennsylvania with more significant cold weather, should I be changing the choice of oil.

Oil Choice
Frequently discussed actions (10)

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

Recommend choice of oil in regions

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

What I didn't see was a thread specifically dealing with the recommended choice of oil in regions that get real winter weather!!

Oil Choice

Recommend 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

0W-40 is Porsche recommended oil.

Oil Choice

Replace choice of 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 · Original poster

Now that it is in Pennsylvania with more significant cold weather, should I be changing the choice of oil.

Oil Choice

Replace oil 2x a year

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

For me, I may switch oil at some point, but so far I've used Mobil 1 0W-40 and change the oil 2x a year.

Oil Choice

Run 0w-40 or 5w-40, either is fine

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

Run 0w-40 or 5w-40, either is fine.

Oil Choice

Run mobil 1 0w-40

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

The owner there was running Mobil 1 0W-40.

Oil Choice

Use 0w40; dealer

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 live in the great Northeast and using 0w40; dealer recommended and that works for me.

Oil Choice

Use castrol 5w-50 in my '03 c4s based

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

I use Castrol 5W-50 in my '03 C4S based on some viscosity breakdown info I'd read at the L N site.

Oil Choice

Use dt40

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 have been using DT40.

Oil Choice

Use mobil 1 0w-40

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

For me, I may switch oil at some point, but so far I've used Mobil 1 0W-40 and change the oil 2x a year.

Oil Choice
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.

31 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: 20261026T130754Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Recently acquired a '03 C4S from South Carolina. The owner there was running Mobil 1 0W-40. Now that it is in Pennsylvania with more significant cold weather, should I be changing the choice of oil. And it is necessary enough to do another oil change. Last one was 1000 miles ago.

POST 2Original post

0W-40 is Porsche recommended oil. You should be good to go.

POST 3Original post

You are fine as-is. 0w40 is already the thinnest oil at cold temperature, so it is perfect for you. Here is the oil viscosities chart.

POST 4Original post

Got a couple jugs of LiquiMoly 0W-40 ready to roll. TC

POST 5Original post

Quotes source post: 10879666

0W-40 should be fine for the winter. Summer you may want to move to 5W-40/5W-50. When I switched to 5W-40 in July, I notice a good decrease in oil consumption.

POST 7 / ORIGINAL POSTEROriginal post

Quotes source post: 10880353

I'm sorry - didn't see a suitable "SEARCH" hit. New to the marque - nice intro

POST 8Original post

Congrats on the new acquisition. I live in the great Northeast and using 0w40; dealer recommended and that works for me. With that said I won't drive the car much in the cold weather once it snows and they salt the roads. However, the car and the 0w40 felt great this morning at 30 degrees!

POST 9Original post

I saw this today and figured there would be an active oil thread to post it in. For me, I may switch oil at some point, but so far I've used Mobil 1 0W-40 and change the oil 2x a year. There may be better choices, but I figure factory fill and recommendation can't be a bad choice. Plus it's readily available, and not terribly expensive. I've read high ZDDP content may harm the cats, I don't know what the optimum level is. edit: embed doesn't seem to be working http://www.youtube.com/watch?v=qm-G6Ox1v1k

POST 10Original post

Quotes source post: 10880361

You are kidding right? There are soooooo many oil threads on here it will make your head spin like a failed IMS. I have been using DT40. PS......Go Pack!

POST 11Original post

I use Castrol 5W-50 in my '03 C4S based on some viscosity breakdown info I'd read at the L N site. It's a summer car. Sent from my iPad using Rennlist

POST 12 / ORIGINAL POSTEROriginal post

Quotes source post: 10881636

Mine is going to be a year-round car so lower viscosity will do well with the winter temps.

POST 13Original post

Quotes source post: 10881691

Motul X-cess 8100, 5W-40. Try Amazon and look for the five-liter, four pack.

POST 14Original post

But this one is the real downer. Hmmn, what could that be?

POST 15Original post

Quotes source post: 10881774

Care to enlighten for the uninitiated (me!)?

POST 16Original post

Quotes source posts: 10881774, 10882027

No, his MO is to post scary pics and let the lemmings here(of which there are many) come to their own conclusions. A great analogy would a proctologist dive bombing social media with pics of **** cancer without explanation(except to make it known that he, the poster himself, is indeed a proctologist) and letting the majority of viewers come to the conclusion that they will inevitably develop a$$ cancer. JR, do you even know definitively the oil that was used in your photos(not to mention the oil that was used in this particular car over its lifetime)??? Are you saying this can be expected by using a certain brand/weight of Porsche approved oil...because if so, I'm sure many of us here would love to know which oil you are signaling out here. What BS...I know for a fact most owners who remove the sump plate of their 996s DO NOT see this type of thing. Halloween is over, keep these scary bullsh*t pics to yourself... If you have any credibility at all, it is diminished by your incessant scare tactics. You know damn well these photos are NOT the norm, yet you post them in a pathetic attempt to scare owners here and promote your business. This is reprehensible IMHO.

POST 19Original post

Quotes source post: 10880361

thats a blatant lie. You didn't find a search hit about oil? come on. not to mention...there is your owners manual.

POST 20Original post

Quotes source post: 10882053

Keep pissing on the one guy who is making efforts to improve the engine in your vehicle. Brilliant.

POST 21 / ORIGINAL POSTEROriginal post

Quotes source post: 10882198

What I didn't see was a thread specifically dealing with the recommended choice of oil in regions that get real winter weather!! As for the manual, take a look at the scanned page and you will notice it doesn't mention 0W oil anywhere!!!

POST 22Original post

Quotes source post: 10882240

Don't bore us with your nuerotic/idiotic comments...if I have a wardrobe question I'll be sure to seek your counsel.

POST 23Original post

Gotta invite my wife to tune in on this soap opera instead.

POST 24Original post

What's the over/under on page count for this one?

POST 25Original post

Quotes source post: 10882274

You may even be dumber than I thought. Jake raby is pretty much the only hope you have for aftermarket support for your flawed platform. If you'd rather have new owners be unaware about the potential failures, then you may not only be dumb, but also an *******.

POST 26Original post

Quotes source post: 10882265

It ain't rocket science. A 5w and 0w are going to act almost identically at say temps above 10 degrees F. Run 0w-40 or 5w-40, either is fine.

POST 27Original post

Some interesting reading on this subject from one of the folks that developed the IMS replacement procedure: http://www.lnengineering.com/oil.html

POST 28Original post

[Image-only post; no author-written text. Original image references:] http://hragvartanian.com/wp-content/uploads/2013/10/art-world-turns-640.gif

POST 29Original post

I use a cocktail of Mobil 1 Turbo Diesel 5W-40 and Mobil 1 High Mileage 10W-40....... Why? Because I am the self-professed oil expert for my cars......

POST 30Original post

Quotes source post: 10882465

Really??? Once again with the petty insults, you never have anything of substance to add so like a little kid you resort to name calling. I think most of us on here are smart enough to see who the real dumb ******* is in the room. Besides, what does any of this have to do with JR posting pics of an engine full of sludge(without explaining the pics) in response to an owner asking what type of oil he should use.

POST 31Original post

I am still anxiously awaiting JR's explanation of the horror pics he previously posted in this thread...I am sure he simply forgot to add the facts to his post. Facts like: the brand/weight of oil, length it was in the engine, history of the engine, etc. Yeah, I'm sure he just forgot...it's not like he has some type of conflict of interest here where he sells his own oil...Oh, wait... Please educate us. I, and I'm sure many others on here, would love to know which Porsche approved oil(s) can cause this scenario. Think of it as my way of educating the masses on the BS design of the M96/M97 in an effort to make amends for being an *******...HAHA(it takes a special kind of idiot (such as a resident idiot troll) to think that the issues associated with the 996/997 have been kept quite...I'm still laughing at that one.) One thing I am sure of, this engine gunk was NOT caused by DT40.

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