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Porsche Classic Oil 5W 50 for 986 Boxster - Page 1 - Boxster/Cayman - PistonHeads UK

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YOUR RESEARCHPorsche Classic Oil 5W 50 for 986 Boxster - Page 1 - Boxster/Cayman - PistonHeads UK

Leading reported evidence

Replace once a year will be

Performed · outcome unconfirmed

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Performed · outcome unconfirmed

But at the end of the day - with that low useage, any quality oil (with the correct ACEA spec.) changed once a year will be

Porsche Classic Oil 5W 50 for 986 Boxster - Page 1 - Boxster/Cayman - PistonHeads UK
Frequently discussed work

Adjust oil

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Discussions that contain suggestions
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Suggestion

Then adjust your oil-changes to suit.

Porsche Classic Oil 5W 50 for 986 Boxster - Page 1 - Boxster/Cayman - PistonHeads UK
Read full discussion summary

Leading evidence: 'Replace once a year will be' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Adjust oil' (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.

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1 matching discussions · 13 captured posts examined · 1 partial discussions

Compare 4 other evidence results

Use 10w/50 oil

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

I do know that the a few of the guys I know who race the Boxsters uses a 10w/50 oil but for what it is worth, I use the factory recommended oil in my (non-Porsche) race car and it seems okay (although that car only has 5k miles on the engine/chassis)

Porsche Classic Oil 5W 50 for 986 Boxster - Page 1 - Boxster/Cayman - PistonHeads UK

Use factory

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

I do know that the a few of the guys I know who race the Boxsters uses a 10w/50 oil but for what it is worth, I use the factory recommended oil in my (non-Porsche) race car and it seems okay (although that car only has 5k miles on the engine/chassis)

Porsche Classic Oil 5W 50 for 986 Boxster - Page 1 - Boxster/Cayman - PistonHeads UK

Adjust oil

Suggestion or failed attempt

No successful repair reported for this finding.

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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

Then adjust your oil-changes to suit.

Porsche Classic Oil 5W 50 for 986 Boxster - Page 1 - Boxster/Cayman - PistonHeads UK

Recommend millers nanodrive 10w50

Suggestion or failed attempt

No successful repair reported for this finding.

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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

Don’t Hartech recommend millers nanodrive 10w50 for older cars and for use in their rebuilt engines?

Porsche Classic Oil 5W 50 for 986 Boxster - Page 1 - Boxster/Cayman - PistonHeads UK
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.

Adjust 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

Then adjust your oil-changes to suit.

Porsche Classic Oil 5W 50 for 986 Boxster - Page 1 - Boxster/Cayman - PistonHeads UK

Recommend millers nanodrive 10w50

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

Don’t Hartech recommend millers nanodrive 10w50 for older cars and for use in their rebuilt engines?

Porsche Classic Oil 5W 50 for 986 Boxster - Page 1 - Boxster/Cayman - PistonHeads UK

Replace oil at 5k miles or 12mnths

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 had thought latest thinking was to change oil at 5k miles or 12mnths to help IMS lubrication etc.

Porsche Classic Oil 5W 50 for 986 Boxster - Page 1 - Boxster/Cayman - PistonHeads UK

Replace oil now and wondering what best

No successful repair reported for this finding.

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Discussions
Read evidence and context
Discussions that contain suggestions
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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

Last serviced around 11months ago so want to change the oil now and wondering what best to use, It's going to be a weekend summer car, occasional spirited driving and no track use and probably not cover more than a few thousand miles a year.

Porsche Classic Oil 5W 50 for 986 Boxster - Page 1 - Boxster/Cayman - PistonHeads UK

Replace oil twice a year is the plan

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

Cost of the oil and consumables aren't an issue so just want to try and find the best option and enjoy doing some of the maintenance myself so changing the oil twice a year is the plan which for the small cost certainly won't do the car any harm i dont think.

Porsche Classic Oil 5W 50 for 986 Boxster - Page 1 - Boxster/Cayman - PistonHeads UK

Suggestion

Cost of the oil and consumables aren't an issue so just want to try and find the best option and enjoy doing some of the maintenance myself so changing the oil twice a year is the plan which for the small cost certainly won't do the car any harm i dont think.

Porsche Classic Oil 5W 50 for 986 Boxster - Page 1 - Boxster/Cayman - PistonHeads UK

Replace once a year will be

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

But at the end of the day - with that low useage, any quality oil (with the correct ACEA spec.) changed once a year will be

Porsche Classic Oil 5W 50 for 986 Boxster - Page 1 - Boxster/Cayman - PistonHeads UK

Run on a 40 weight 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

The engine was designed to run on a 40 weight oil.

Porsche Classic Oil 5W 50 for 986 Boxster - Page 1 - Boxster/Cayman - PistonHeads UK

Suggestion

The engine was designed to run on a 40 weight oil.

Porsche Classic Oil 5W 50 for 986 Boxster - Page 1 - Boxster/Cayman - PistonHeads UK

Suggestion

The engine was designed to run on a 40 weight oil.

Porsche Classic Oil 5W 50 for 986 Boxster - Page 1 - Boxster/Cayman - PistonHeads UK

Use 10w/50 oil

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 do know that the a few of the guys I know who race the Boxsters uses a 10w/50 oil but for what it is worth, I use the factory recommended oil in my (non-Porsche) race car and it seems okay (although that car only has 5k miles on the engine/chassis)

Porsche Classic Oil 5W 50 for 986 Boxster - Page 1 - Boxster/Cayman - PistonHeads UK

Use factory

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 do know that the a few of the guys I know who race the Boxsters uses a 10w/50 oil but for what it is worth, I use the factory recommended oil in my (non-Porsche) race car and it seems okay (although that car only has 5k miles on the engine/chassis)

Porsche Classic Oil 5W 50 for 986 Boxster - Page 1 - Boxster/Cayman - PistonHeads UK

Use millers cfs nt+ so

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 did read that Hartech only use Millers CFS NT+ so that's what I would use.

Porsche Classic Oil 5W 50 for 986 Boxster - Page 1 - Boxster/Cayman - PistonHeads UK
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.

13 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • PistonHeads: 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

In my search for the best oil, found this from Porsche: https://www.porsche.com/uk/accessoriesandservice/c... It's a 5W 50 for older models that include now the 986. Anyone moved to this?

POST 2Original post

no...no...no...no...NO All that will do is line Porsche's pockets, and rob some of the power from your engine. As already discussed, find the oldest formulation quality 5W40 that you can. Look at OPIE (no affiliation) for example. If you want to learn about oil, and go mad, visit Rennlist.

POST 3 / ORIGINAL POSTEROriginal post

I’m already down several rabbit holes on oil!

POST 4Original post

I'd say you were probably overthinking it. Latest theories on Porsche engine damage/bore-score/etc is that higher ethanol petrol is causing bore wash in the older engines - go down that rabbit-hole. But in your case I am a bit confused - who does your normal/service oil-changes? What do they use? If you are increasing the frequency of change, is there a reason for this? Do you put the car away for months at a time? Do you track the car? Otherwise the schedule is probably correct for your usage, if normal.

POST 5 / ORIGINAL POSTEROriginal post

Thanks, So the car is new to me hence the questions. It has a FSH but I generally like to go down the do more than the minimum end of the spectrum. The car has had a mix over it's lifecycle of 0w 40 and 5w 40. It's only ever done a few thousand miles a year over the last 10 years and only 1500 the year before I purchased it. Last serviced around 11months ago so want to change the oil now and wondering what best to use, It's going to be a weekend summer car, occasional spirited driving and no track use and probably not cover more than a few thousand miles a year. Cost of the oil and consumables aren't an issue so just want to try and find the best option and enjoy doing some of the maintenance myself so changing the oil twice a year is the plan which for the small cost certainly won't do the car any harm i dont think. Edited by DBXExige on Wednesday 7th June 13:41

POST 6Original post

Ah right understood. DBXExige said: Cost of the oil and consumables aren't an issue so just want to try and find the best option and enjoy doing some of the maintenance myself so changing the oil twice a year is the plan which for the small cost certainly won't do the car any harm i dont think. But it won't benefit the car, and, to put my Green Hat on, it's a waste of resources/chemicals down the drain. If you want to do the absolute best for the engine, get an oil analysis done. Then adjust your oil-changes to suit. But at the end of the day - with that low useage, any quality oil (with the correct ACEA spec.) changed once a year will be more than adequate. Spend your money on low/no ethanol petrol instead. IMO. YMMV.

POST 7 / ORIGINAL POSTEROriginal post

Thanks again, agree on the better fuel option. I had thought latest thinking was to change oil at 5k miles or 12mnths to help IMS lubrication etc. Appreciate the comments and suggestions.

POST 8Original post

I did read that Hartech only use Millers CFS NT+ so that's what I would use. It was a while ago, so don't know if it's still the case.

POST 9 / ORIGINAL POSTEROriginal post

Was at a Porsche AD this week and chatting to the service guy who said Porsche new push the 5w 50 for 986s. I wasn't clear if he agreed but it's what they recommend is asked from what he said.

POST 10Original post

DBXExige said: ....Porsche new push the 5w 50 for 986s. I wasn't clear if he agreed but it's what they recommend is asked from what he said. I would imagine he also thinks it's b ks. The engine was designed to run on a 40 weight oil. If you want to give Porsche a ridiculous amount of money for an oil that is too 'thick' for your engine, that's your choice. If you don't want to believe mad voices on the internet, go and ask the independents who deal with these engines on a daily basis. Edited by Orangecurry on Friday 9th June 09:51

POST 11 / ORIGINAL POSTEROriginal post

Orangecurry said: I would imagine he also thinks it's b ks. The engine was designed to run on a 40 weight oil. If you want to give Porsche a ridiculous amount of money for an oil that is too 'thick' for your engine, that's your choice. If you don't want to believe mad voices on the internet, go and ask the independents who deal with these engines on a daily basis. Edited by Orangecurry on Friday 9th June 09:51 I wasn't agreeing with him! Just feeding back the narrative from the AD.

POST 12Original post

Orangecurry said: DBXExige said: ....Porsche new push the 5w 50 for 986s. I wasn't clear if he agreed but it's what they recommend is asked from what he said. I would imagine he also thinks it's b ks. The engine was designed to run on a 40 weight oil. If you want to give Porsche a ridiculous amount of money for an oil that is too 'thick' for your engine, that's your choice. If you don't want to believe mad voices on the internet, go and ask the independents who deal with these engines on a daily basis. Edited by Orangecurry on Friday 9th June 09:51 I would guess that the thinking is that, whilst it was designed for a 40w oil, in many cases, the engine tolerances (due to wear etc) would now be 100-150k miles down the line from where they were when it was originally built. I can see some logic in that but I have no real knowledge of rebuilding an M96 or M97 to know whether it really makes sense. I do know that the a few of the guys I know who race the Boxsters uses a 10w/50 oil but for what it is worth, I use the factory recommended oil in my (non-Porsche) race car and it seems okay (although that car only has 5k miles on the engine/chassis)

POST 13Original post

Don’t Hartech recommend millers nanodrive 10w50 for older cars and for use in their rebuilt engines?

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