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911uk

Yearly oil change

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15 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHYearly oil change

Leading reported evidence

Replace yearly regardless of miles

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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Performed · outcome unconfirmed · Original poster

The previous owner changed yearly regardless of miles.

Yearly oil change
Frequently discussed work

Recommend by hartech

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Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

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Suggestion

As recommended by Hartech.

Yearly oil change
Read full discussion summary

Leading evidence: 'Replace yearly regardless of miles' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Recommend by hartech' (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 · 15 captured posts examined · 1 partial discussions

Compare 4 other evidence results

Use opie oils

Performed · outcome unconfirmed

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 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 Opie oils.

Yearly oil change

Recommend by hartech

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

As recommended by Hartech.

Yearly oil change

Recommend on older or high mileage engines

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

That's what Hartech recommend on older or high mileage engines.

Yearly oil change

Replace 0w50 mobil 1 at

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

Yearly oil change - 0w50 mobil 1 at that mileage..

Yearly oil change
Frequently discussed actions (8)

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

Recommend by hartech

No successful repair reported for this finding.

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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

As recommended by Hartech.

Yearly oil change

Recommend on older or high mileage engines

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

That's what Hartech recommend on older or high mileage engines.

Yearly oil change

Replace 0w50 mobil 1 at

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

Yearly oil change - 0w50 mobil 1 at that mileage..

Yearly oil change

Replace when you come

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Reported fixes
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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

Sadly keep it yearly as many won't touch it without regular frequent changes when you come to sell.

Yearly oil change

Replace yearly regardless of miles

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
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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.

Performed · outcome unconfirmed · Original poster

The previous owner changed yearly regardless of miles.

Yearly oil change

Run 5/40

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Suggestion · Original poster

Currently running 5/40.

Yearly oil change

Use now

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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

This is the Millers a lot of the lads use now.

Yearly oil change

Use opie oils

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 Opie oils.

Yearly oil change
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.

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

  • 911uk: 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: 20261026T165820Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I have had my 3.4 C2 for about 16 months now. I had it serviced just after I bought the car at 53,500 miles. Mileage is now just over 55k. The previous owner changed yearly regardless of miles. Currently running 5/40. Should I stick with 5/40 or change to 10/50 or not waste my money and leave as is until I've done a few more miles? :dont know:

POST 2Original post

If it ain't broken... Keep up the yearly thing too :thumb:

POST 3Original post

Yearly oil change - 0w50 mobil 1 at that mileage.. Only just run in.

POST 4Original post

Sadly keep it yearly as many won't touch it without regular frequent changes when you come to sell. 2k miles is a monumental waste of al that synthetic oil though :sad: Please promise to do 10k next year.

POST 5 / ORIGINAL POSTEROriginal post

There is absolutely no chance of me doing 10k next year. :nooo: 1500 is about the norm for me.

POST 6Original post

It's frustrating dumping out "as new" quality oil but as said, it simply has to be done, for the next owner. Mad isn't it. I'm in a similar boat although I generally do 3-5k per annum. I use millers 10/50 at £100 a pop plus oil filter (from OPC). What comes out of mine this year is going in my old volvo. :grin:

POST 7 / ORIGINAL POSTEROriginal post

I agree, it is a bit mad and a total waste. I shall order some Millers 10/50. Where is the best place to purchase?

POST 9Original post

I use Opie oils. They often have offers on, but by the looks of it at the moment all there is is free delivery on orders over £60. This is the Millers a lot of the lads use now. As recommended by Hartech. You'll need two 5l bottles. https://www.opieoils.co.uk/p-115239...-cfs-10w-50-nt-full-synthetic-engine-oil.aspx There are loads of other options on the Opie site though ranging from about £60 for 9 litres. Just type your reg in. :thumb:

POST 10Original post

Because it's the best. Why scrimp on the most important thing for your engine? Unless you mean why the 50 grade rather than 40. That's what Hartech recommend on older or high mileage engines. My engine has only done 67k but I prefer the extra hot temp protection the 50 offers. Plus the extra .25 -.3 bar oil pressure when hot is reassuring.

POST 11 / ORIGINAL POSTEROriginal post

Thanks. Do you always go to your OPC for the filter? I'm assuming that they would be made be MAN or the like?

POST 12Original post

I do but you are correct, they are Mann. Even the printing on them is identical. My Indy gives customers the choice. I just go to my OPC as I'm usually getting other parts anyway. My indy showed me a few horror stories years ago. One car was in for a rebuild because the aftermarket oil filter had collapsed and starved the engine of oil. I think that must be etched into my memory, hence the OPC filter.

POST 13Original post

I wouldn't class 55k as a higher miler and I also wouldn't worry too much about the 50 on a engine that doesn't suffer bore scoring. 10w50 everday of the week on an M96/97 3.6 or above, regardless of mileage. Anyway, lets not go down that topic of how to bring your kids up :grin:

POST 14Original post

Exactly. We all have our preferences. :thumb:

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