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Regarding units: mg/Kg is the same as ppm which is what Blackstone and all the other North American labs I have seen reports from use.
Iron is an important measurement, you do want this measurement. The Al and Cu are both kind of high in the report.
Where's the Iron count?? and mileage on the (type and year) of engine?
997.2 c2s 110,000kms (68k miles)
Iron value is 18 mg/kg
Originally Posted by Eric Buckley
Regarding units: mg/Kg is the same as ppm which is what Blackstone and all the other North American labs I have seen reports from use.
Iron is an important measurement, you do want this measurement. The Al and Cu are both kind of high in the report.
997.2 c2s 110,000kms (68k miles)
Iron value is 18 mg/kg
997.2 c2s 110,000kms (68k miles)
Iron value is 18 mg/kg
997.2 c2s 110,000kms (68k miles)
Iron value is 18 mg/kg
seems high, am i screwed?
My 997.2 has 170,000km and I see Iron at 7 to 10 after 5,000km. So, 18 is high. I think it may come from piston rings? Others will comment. It is not a good sign, though. Along with the high Cu and Al it may indicate both cylinder and bearing wear. A borescope at a good shop might be an idea. You want one that knows what they're doing, can take clear pictures, and can understand what they are seeing. Ideally they would have borescoped other 997's before. As I understand it a good job involves looking from both the top and bottom of the cylinder, which involves quite a bit of disassembly to get the view. At least then you would know what you are dealing with. I don't know what you would do if you find damage though. There are different schools of thought on if it is really worth doing preventative work (engine rebuild) that is more than half the value of the car.
Yep, that's high for 5k miles. Here's a whole series of oil changes from my wife's 997 3.8L. Even when I missed an oil change and went almost 8k miles, none of the metals saw double digit ppm levels. You'll also notice the Driven oil, even at higher mileage intervals, does a better job of eliminating iron wear than the Motul xcess did. Only the first analysis after the change saw iron levels close to what they were with the Motul, and each one after that with Driven DT40 has been lower. It's also a good example to show how going beyond the 5,000 mile change interval negatively effects wear metals (highest aluminum ppm), viscosity, and flashpoint. It also shows how the oil becomes quite acidic going that many miles, which is bad for internal engine metals. When the TAN number exceeds the TBN number, the oil is more acidic than basic, which is not what you want.
OK all, have at it!!! Tell my my car is about to explode!!! I definitely am using more oil... I don't know why. Liqui Moly Leichtlauf 5W-40 with one bottle of Ceratec. Why this oil combo? I dunno. Oh, and I do cold oil changes!! Ha!
Peace
Bruce in Philly
Last edited by Bruce In Philly; 03-19-2021 at 08:33 PM.
OK all, have at it!!! Tell my my car is about to explode!!! I definitely am using more oil... I don't know why. Liqui Moly Leichtlauf 5W-40 with one bottle of Ceratec. Why this oil combo? I dunno. Oh, and I do cold oil changes!! Ha!
Peace
Bruce in Philly
Nothing wrong with those numbers Bruce, aside from the slightly higher consumption. More sustained high speeds this time?
OK all, have at it!!! Tell my my car is about to explode!!! I definitely am using more oil... I don't know why. Liqui Moly Leichtlauf 5W-40 with one bottle of Ceratec. Why this oil combo? I dunno. Oh, and I do cold oil changes!! Ha!
Peace
Bruce in Philly
Looks good to me. You have good trend data going back years and the levels have stayed constant.
03-12-2021, 12:09 PM
