fullymatted.
Back to search
Rennlist

Gold/Copper "dust" in oil fresh from significant engine work...?

Add to repair workspace
Open repair workspace
Original source
27 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHGold/Copper "dust" in oil fresh from significant engine work...?

Leading reported evidence

Clean pulleys and serpentine belt (belt looks like new�.)

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 · Original poster

Regarding chirp/squeal he said he cleaned the pulleys and serpentine belt (belt looks like new�.) but didn�t fix the chirp/squeal

Gold/Copper "dust" in oil fresh from significant engine work...?
Frequently discussed work

Check codes and they were cat

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

Check the codes and they were Cat.

Gold/Copper "dust" in oil fresh from significant engine work...?
Read full discussion summary

Leading evidence: 'Clean pulleys and serpentine belt (belt looks like new�.)' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check codes and they were cat' (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.

Read captured replies

1 matching discussions · 27 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Use ( i was worried about mixing based

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 · Original poster

I picked up the car and noticed 10w-30 oil listed on the slip, and only 2 gallons of antifreeze and he couldn�t tell me exactly what antifreeze he used ( I was worried about mixing based on what I have read..).

Gold/Copper "dust" in oil fresh from significant engine work...?

Check codes and they were cat

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

Check the codes and they were Cat.

Gold/Copper "dust" in oil fresh from significant engine work...?

Lubricate by metal laden oil could be damaged

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

Anything that was lubricated by metal laden oil could be damaged.

Gold/Copper "dust" in oil fresh from significant engine work...?

Recommend lifters leads me

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

The fact they recommended lifters leads me to believe it may have been diagnosed incorrectly and that you had a scored bore, as we commonly see this occur with shops that are not familiar with the M96 engine.

Gold/Copper "dust" in oil fresh from significant engine work...?
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.

Check codes and they were cat

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

Check the codes and they were Cat.

Gold/Copper "dust" in oil fresh from significant engine work...?

Clean pulleys and serpentine belt (belt looks like new�.)

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 · Original poster

Regarding chirp/squeal he said he cleaned the pulleys and serpentine belt (belt looks like new�.) but didn�t fix the chirp/squeal

Gold/Copper "dust" in oil fresh from significant engine work...?

Lubricate by metal laden oil could be damaged

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

Anything that was lubricated by metal laden oil could be damaged.

Gold/Copper "dust" in oil fresh from significant engine work...?

Recommend lifters leads me

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

The fact they recommended lifters leads me to believe it may have been diagnosed incorrectly and that you had a scored bore, as we commonly see this occur with shops that are not familiar with the M96 engine.

Gold/Copper "dust" in oil fresh from significant engine work...?

Repair work

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

Trying to arm chair repair work from a far is always an exercise in how to be completely wrong.

Gold/Copper "dust" in oil fresh from significant engine work...?

Replace bank 1 lifters

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

Not that it matters but why did your mechanic recommend and change the bank 1 lifters??

Gold/Copper "dust" in oil fresh from significant engine work...?

Replace dropping the pan and sending an oil sample

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 drove it about 20 miles and plan on doing another oil change, dropping the pan and sending an oil sample to Blackstone.

Gold/Copper "dust" in oil fresh from significant engine work...?

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 · Original poster

I decided I would change the oil after a bit of driving ( 3 days after picking it up and maybe 150 miles) and what I found has me really worried�see pics.

Gold/Copper "dust" in oil fresh from significant engine work...?

Replace oil, dropping the pan, bore scope, etc

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

Any mechanical noises aren't good and that's why it's especially important to do a full PPI with changing the oil, dropping the pan, bore scope, etc.

Gold/Copper "dust" in oil fresh from significant engine work...?

Run engine is trying

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

A perfectly running engine is trying to tear itself apart with every rotation on the best of days.

Gold/Copper "dust" in oil fresh from significant engine work...?
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.

27 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: 20261026T174436Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

First, I'm a first time Porsche owner and have found this Forum and it's members to be a great resource! Thanks in advance for all of those who share their experience and expertise! Car: 2001 996 C2, 3.4L with 79K I�ll apologize in advance for those that feel these topics are covered elsewhere, but I couldn�t find a discussion that had all the variables as my situation. Background: Bought used 3 months ago, felt pretty good about seller�s integrity and maintenance records/history he had and as well as Carfax info. Purchased it and drove it for a couple weeks, probably 200 miles or so, car ran well but there was the metal on metal rattle when starting it that lasted a couple seconds. During my research before purchasing I had decided I would at least do the IMS bearing so I didn�t have that in the back of my mind every time I was driving. Found what appeared to be a good Porsche Indy, good on line reviews, had a number of Porsche�s in yard (some very expensive classics, Boxsters, etc.) and seemed knowledgeable and friendly. I decided to have him do the IMS, AOS, RMS, full clutch kit and flush fluids (antifreeze, differentials, etc., gave him the deposit to cover parts and dropped it off. After a couple weeks started to get worried about his responses to questions, delays, etc. he ended up having the car for 6 weeks. He also suggested lifters on bank 1 and timing chain tensioners and guides, which I agreed to. Ok�..car is done�yippee��should drive like new and be worry free! I picked up the car and noticed 10w-30 oil listed on the slip, and only 2 gallons of antifreeze and he couldn�t tell me exactly what antifreeze he used ( I was worried about mixing based on what I have read..). Drove car home and check engine light came on and noticed oil on the garage floor immediately after parking and there is an intermittent chirp/squeal on startup and while driving. Check the codes and they were Cat. Conv efficiency, Injector circuit (all 6) and Hot MAF film. I cleared the codes, drove it and only the Cat Conv. came back. I dropped the car back off at Indy and he fixed the oil leak (spark plug O rings and cam shaft covers). Regarding chirp/squeal he said he cleaned the pulleys and serpentine belt (belt looks like new�.) but didn�t fix the chirp/squeal Pulled filter out of housing and this is what glove looked like... Drained oil in sunlight... brand new oil drain pan and oil only has about 150 miles on it.. . I decided I would change the oil after a bit of driving ( 3 days after picking it up and maybe 150 miles) and what I found has me really worried�see pics. My first thought was �gold dust�, but on the glove it looks more like a copper color. I put in M1, 0w-40 and a new filter. I drove it about 20 miles and plan on doing another oil change, dropping the pan and sending an oil sample to Blackstone. Drained oil with only 150 miles since last change in brand new oil drip pan.. My question to this forum is this: Is there any chance this is a normal result after doing this type of engine work�? So Sorry for the long post and appreciate any input from this knowledgeable group!

POST 3Original post

Nope..that's what oil looks like when main journal and rod bearings have been eaten.

POST 4Original post

if it is the crank, this what it will look like when it fails....ask me how i know☹

POST 5Original post

Not that it matters but why did your mechanic recommend and change the bank 1 lifters?? Just curious...

POST 6Original post

Quotes source post: 15942854

This was my first question when I read the OP's post. Low chance the lifters were bad.

POST 7 / ORIGINAL POSTEROriginal post

Quotes source post: 15942866

They probably weren't looking back on it. There was a slight ticking but I hadn't driven the car much so I really just went with his recommendation to do it "while I'm in there" and I was agreeable to any pre-emptive work while engine was out as I don't have a lift.

POST 8 / ORIGINAL POSTEROriginal post

Quotes source posts: 15942789, 15942785

Thank you both.....felt stupid asking the question, but I guess I was holding out hope.. Is it reasonable to think a competent mechanic would have noticed a/the problem when doing the work I described? And/or could it be the result of the work that was done if not done correctly?

POST 9Original post

Quotes source post: 15942899

There are no stupid questions. I don't have an opinion on this chicken or egg question, but I would find a different mechanic just based on the lifter deal and the 10w30 oil.

POST 10Original post

Did the mechanic mention how the oil looked when he changed it? I am guessing he didn't. Where do you live?

POST 11 / ORIGINAL POSTEROriginal post

He didn't mention it and based on the fact that it was this bad with only a couple hundred miles since he put in new oil, I feel like it would have been evident while he was inside the engine. I'm in beautiful New Hampshire! (where it's great weather to take a Porsche for a spin)

POST 12 / ORIGINAL POSTEROriginal post

Oh man lopue......I think I can figure out how you know....bummer!!

POST 13Original post

So the "dust" is only in the oil filter, not in the oil itself? I was hoping you might be closer. I might be getting a running Boxster engine in a few weeks. Could be an option if you need a replacement engine.

POST 14Original post

NH: welcome, and you have lots of company and support on this site. Once you decide on a course of action, every day will get better than the day before! Many of us have been in the same boat. Here’s some pics of my situation when I bought mine.

POST 15Original post

Quotes source post: 15942899

Yep..no stupid questions. Now you just have to deal with the aftermath and decide if the car has enough value to you to cover the expense of doing what comes next. Personally knowing what I know I don't think someone with a clue could have been in that engine and not noticed things going pear shaped. However I wasn't there when it was being worked on so I wouldn't be willing to throw someone under the bus. If he wasn't looking specifically for the condition of the rotating assembly and nothing had been bad enough to show elevated heat levels around a journal then he may have done nothing wrong. Trying to arm chair repair work from a far is always an exercise in how to be completely wrong. Even if the seller was perfect on maintenance these are mechanical items. Things can go south at any point and be the fault of no one. A perfectly running engine is trying to tear itself apart with every rotation on the best of days. I would perhaps look for another Indy but I think once you start telling the story that someone was in it before that shop you need to be prepared for the response. Either way someone is going to have to tear it down to see what is responsible for all the cooper material in the oil.

POST 16 / ORIGINAL POSTEROriginal post

Dust was in both oil and filter. Maryland isn't that far... drove to Virginia to buy the car! Not sure what path I'm going to take with this...

POST 17 / ORIGINAL POSTEROriginal post

Thanks for the response and support!

POST 18Original post

Quotes source post: 15943023

If it's not too far for you, keep me in the loop. I might be able to help you out if you determine your engine is dying, even if you need a temporary solution. Good luck!

POST 19Original post

So sorry to see this. x2 on the new indy... Keep us posted and good luck.

POST 20Original post

Sorry to hear about this and I agree about finding new indy. For comparison, my car requires the engine out for IMS and AOS replacement. I get it back in 5 days at the most. At a minimum he should have examined the oil and filter before proceeding with the expensive work. As far as not knowing which coolant he used - that is very telling.

POST 21Original post

Subscribed, sorry to read about this. Keep us posted

POST 22Original post

Quotes source post: 15943023

Sorry to see this happen on a new acquisition. Any mechanical noises aren't good and that's why it's especially important to do a full PPI with changing the oil, dropping the pan, bore scope, etc. with these cars. Not that it matters at this point, but did the shop doing the work communicate if there was anything in your filter when doing the service work? The fact they recommended lifters leads me to believe it may have been diagnosed incorrectly and that you had a scored bore, as we commonly see this occur with shops that are not familiar with the M96 engine. Regardless, copper in the oil is no good and I'd stop driving the car immediately. The crank may still be salvageable but if you continue, that might not be the case.

POST 23Original post

Charles, Do you think his new IMS bearing has been compromised due to the dust?

POST 24Original post

Quotes source post: 15944767

Unless it's the Solution..... Btw, sorry for the news. If I ever by another one of these cars, the ppi has to include all that Charles suggests.

POST 25Original post

Quotes source post: 15944767

I would say yes. Anything that was lubricated by metal laden oil could be damaged. It is expected that the bypass in the filter housing was allowing the debris to be reintroduced into the engine.

POST 26 / ORIGINAL POSTEROriginal post

Charles: Lesson learned on PPI for sure......That said seller had a PPI from Porsche dealership that he had done when he purchased it, which he shared with me, and it was only about 4k miles/ 2 years prior. It wasn't as thorough as what you described (pan, bore scope, etc.) but it did provide me with some confidence so I went for it. It was also a bit of an impulse purchase, I had been looking for months for the right combination of colors, mileage, price, etc. and found this one about 500 miles away.... drove down looked at it, looked at his records, drove it, made him an offer, he accepted.....rented a car carrier and brought it home. Seemed like an outstanding idea at the time..... I'm not a total idiot, my son and I have rebuilt/restored jeeps and BMW's and this is my first run with a Porsche...realize this isn't necessarily a "Porsche" problem, but it is the first time I have used an Indy for such significant work as I would typically do it myself.......but wanted it done quick so I could drive it and was worried I didn't have the expertise to do it right.. Appreciate you taking the time to comment and your support and expertise via this forum.

POST 27Original post

Quotes source post: 15944830

It happens. I've made many an impulse buy that turns into a project. This is just an example that it doesn't take many miles for an engine to go south and with little to no warning. We've had many father/son teams tackle their own engine rebuilds over the years, many whom have taken the hands on engine classes offered by The Knowledge Gruppe, with great success. It's no different than any other car you have worked or restored, just take your time. You have many other Rennlisters that have documented their builds, so you are in great company.

This is a source reference. Confirm exact model applicability in the original material.