High iron and copper level in oil, next course of action
#62
Nordschleife Master
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#63
Rennlist Member
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Latest report with metal numbers continue to improve (9 months and 4k miles on oil). It's interesting to note for this report, I had done A LOT of 0-60 runs at redline yet the metal numbers are not higher. As you can see from all the reports, 4k/9 months oil change interval seems to be good for my engine.
Everything is the same for all these reports except this one and the last one were after the water pump/coolant/low temp thermostat change. Not suggesting anything. Could be just a coincidence. I'm happy anyway![burnout](https://rennlist.com/forums/graemlins/burnout.gif)
Attachment 853332
Everything is the same for all these reports except this one and the last one were after the water pump/coolant/low temp thermostat change. Not suggesting anything. Could be just a coincidence. I'm happy anyway
![burnout](https://rennlist.com/forums/graemlins/burnout.gif)
Attachment 853332
#64
Nordschleife Master
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I have a magnetic oil plug and it has a light coat of metal dust on it but it's minimal. No flakes on the filter at all.
BTW, I've plotted the metal content vs time and mileage. You can see that the metal content is proportional to mileage. This makes me believe the (normal) metal wear is mechanical as opposed to chemical.
UOA.pdf
#65
Race Director
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Yes, 2 oil changes 8k+ miles with good numbers. Still can't explain the high numbers I got initially as I've been using the same oil many years BEFORE my 1st UOA and the car has always been my DD.
I have a magnetic oil plug and it has a light coat of metal dust on it but it's minimal. No flakes on the filter at all.
BTW, I've plotted the metal content vs time and mileage. You can see that the metal content is proportional to mileage. This makes me believe the (normal) metal wear is mechanical as opposed to chemical.
Attachment 853572
I have a magnetic oil plug and it has a light coat of metal dust on it but it's minimal. No flakes on the filter at all.
BTW, I've plotted the metal content vs time and mileage. You can see that the metal content is proportional to mileage. This makes me believe the (normal) metal wear is mechanical as opposed to chemical.
Attachment 853572
The presence of those metals indicate wear is taking place and leads me to think the oil is not up to the rigors to which you are subjecting it, or you are running the oil past its change by date.
#66
Nordschleife Master
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Whether the metals show up due to suspected acid action or mechanical wear it still disturbing to me to see bearing metals showing up in an oil analysis.
The presence of those metals indicate wear is taking place and leads me to think the oil is not up to the rigors to which you are subjecting it, or you are running the oil past its change by date.
The presence of those metals indicate wear is taking place and leads me to think the oil is not up to the rigors to which you are subjecting it, or you are running the oil past its change by date.
#70
Nordschleife Master
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I don't think mine needs a rebuild anytime soon though. Hope I don't jinx myself haha
#73
Former Vendor
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I'd follow up with visual sump and filter inspections at every oil service for a good while. Its not common for an issue to be that pronounced and then just fade away.
Or perhaps you got someone' else's results the first time around.. That wouldn't new the first time thats happened.
Or perhaps you got someone' else's results the first time around.. That wouldn't new the first time thats happened.
#74
Nordschleife Master
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I'd follow up with visual sump and filter inspections at every oil service for a good while. Its not common for an issue to be that pronounced and then just fade away.
Or perhaps you got someone' else's results the first time around.. That wouldn't new the first time thats happened.
Or perhaps you got someone' else's results the first time around.. That wouldn't new the first time thats happened.
I think it's unlikely I got someone else's samples as both of my first two UOA reports (1yr apart) indicated high metal content.
#75
Nordschleife Master
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Latest UOA here. Everything looks normal. The extra make up oil could be due to the defective AOS (22" H2O) I ran for a short period of time.
2015-05-11 03 CARRERA-051115 edited.pdf
2015-05-11 03 CARRERA-051115 edited.pdf