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911uk

Oil leak cured .......by changing oil.

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

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YOUR RESEARCHOil leak cured .......by changing oil.

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Recommend by them (do

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Suggestion · Original poster

Anyway, I had it serviced in May this year and moved to Millers 10w50 as recommended by them (do to fuel dilution thinning my oil out).

Oil leak cured .......by changing oil.
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Leading evidence: 'Recommend by them (do' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Recommend by them (do' (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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Replace (0w40)

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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
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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

I'll give it a try as I noticed after the last oil change (0W40) on the boy's C4 it seemed to leak a little more oil than before.

Oil leak cured .......by changing oil.

Replace the car started

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

So, only a few months after my last clutch change, the car started with the standard weep at the bottom of the bell housing.

Oil leak cured .......by changing oil.

Run quieter

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 e also swapped to Millers 10 50, car runs cooler and oil pressure is higher, plus seems to run quieter.

Oil leak cured .......by changing oil.

Use nt+ version of the millers 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

Did you use the NT+ version of the millers oil?

Oil leak cured .......by changing oil.
Frequently discussed actions (5)

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 them (do

No successful repair reported for this finding.

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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

Anyway, I had it serviced in May this year and moved to Millers 10w50 as recommended by them (do to fuel dilution thinning my oil out).

Oil leak cured .......by changing oil.

Replace (0w40)

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'll give it a try as I noticed after the last oil change (0W40) on the boy's C4 it seemed to leak a little more oil than before.

Oil leak cured .......by changing oil.

Replace the car started

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

So, only a few months after my last clutch change, the car started with the standard weep at the bottom of the bell housing.

Oil leak cured .......by changing oil.

Run quieter

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 e also swapped to Millers 10 50, car runs cooler and oil pressure is higher, plus seems to run quieter.

Oil leak cured .......by changing oil.

Use nt+ version of the millers 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

Did you use the NT+ version of the millers oil?

Oil leak cured .......by changing oil.
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.

8 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: 20261026T205155Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

So, only a few months after my last clutch change, the car started with the standard weep at the bottom of the bell housing. Usual stuff where you can see evidence of it formed on the bottom but never drips on the drive. Anyway, I had it serviced in May this year and moved to Millers 10w50 as recommended by them (do to fuel dilution thinning my oil out). Hey presto - I noticed a month or so after my oil weep has vanished! I also had a new oil cooler fit the month after the service but can't see how that would affect anything. I power washed the underside of the car yesterday so this week I'll get it up on the ramps for a visual check and then monitor it over the next month or so, but it's looking like moving to thicker stuff as stopped it leaking. Watch this space.

POST 2Original post

Thanks Alex. I'll give it a try as I noticed after the last oil change (0W40) on the boy's C4 it seemed to leak a little more oil than before. I just hope it won't get too viscous if we have a really cold winter.

POST 3Original post

I e also swapped to Millers 10 50, car runs cooler and oil pressure is higher, plus seems to run quieter. Might just be snake oil but I’m not going back to the thinner stuff anytime soon.

POST 4Original post

Some oils contain 'seal conditioners' which are absorbed by rubber seals. This fattens them up a tiny bit and can make good previous leaks. I am not sure if Millers 10W50 has them. I know that back in the day Mobil 1 'high mileage 10W50' used to have them. Did you use the NT+ version of the millers oil?

POST 5 / ORIGINAL POSTEROriginal post

No, I used this: Millers Oils CFS 10W50 Motorsport Engine Oil - 5L | Halfords UK Shop the latest Millers Oils CFS 10W50 Motorsport Engine Oil - 5L at Halfords UK www.halfords.com Not shelling out an extra £40 on my old banger.

POST 6Original post

Fair. I was weighing the regular CFS 10W50 with the NT+ version but couldn't figure out what the + package gives me. As you say the price difference is not small.

POST 7 / ORIGINAL POSTEROriginal post

It's 10W50, it's fully synthetic, it's Millers. That was good enough for me to make my mind up.

POST 8Original post

To be fair even the basic Millers 10W50 is twice the cost of my usual Fuchs 5W40.

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