9th UOA on 04 Volvo XC70 (GC 5000 miles)

[Chris B.]

Latest UOA on my 2004 Volvo xc70. Just hit 85,000 miles and the car and engine are both running well. Only problem is fuel was 1.5 and I'm not sure how it is getting in the oil. Also found some black carbon looking stuff in the filter. It looks and feels like the edge of a burned hamburger that got burned to much(hard bits of carbon?) See pictures below.

German Castrol 0w30
5,000 miles on oil, 85,000 on engine.
OEM oil and air filters used. Current air filter has 20,000 miles on it.

1st number is Castrol GTX and Auto RX when car had 49,775 miles(2,500 miles on oil). 2nd number is GTX and Auto RX at 52,820 miles(3,000 miles on oil). 3rd is GTX and 58,000/3,000 miles. 4th is German Castrol at 61,000 miles/3,000 miles. And the 5th number is this OCI using German Castrol at 65,000/4,000 miles total. 6th number is GC at 70,000/5,000 miles, 7th number is GC at 75,000/5,000 miles, 8th number is 80,000 miles and 5,000 miles on the oil and the 9th colum is this sample at 85,000 total miles:

Aluminum 2/2/2/2/2/2/3/2/2

Chromium 0/0/0/0/0/0/0/0/0

Iron 10/7/4/9/12/14/17/17/16

Copper 2/2/2/1/1/1/2/2/2

Lead 1/1/1/1/1/1/1/1/0

Tin 1/0/3/1/3/0/5/0/0

Moly 3/2/3/1/2/1/0/1/0

Nickel 0/0/0/0/0/0/0/0/0

Titanium 1/0/0/0/0/0/0/0/0

Patassuim 1/1/2/2/3/1/2//2/2

Boron 2/1/1/1/2/3/3/1/2

Silicon 2/3/3/3/3/3/2/2/2

Sodium 169/160/174/66/47/36/37/27/25

Calcium 1707/1996/1901/1875/1710/1744/1665/1742/1889

Magnesium 7/10/6/440/487/495/518/531/562

Phosphorus 605/650/607/821/881/884/850/860/988

Zinc 717/836/716/889/881/943/971/976/1166

SUS Viscosity @210 53.4/54.7/57.0/60.0/64.8/62.4/64.2/64.0/63.3

cSt Viscosity @100C 8.30/8.68/9.35/10.22/11.55/10.90/11.38/11.33/11.14

Flahspoint 385/385/375/360/395/350/390/385/355

Fuel 0/0/0/1.5/0/1.8/0.5/TR/1.5

Antifreeze and water all 0

Insolubles 0.6/0.4/0.4/0.2/0.3/0.3/0.3/0.2/0.2

 

[magnus308]

Is your Volvo with or without turbo?

 

[Astro14]

It's a turbo.

 

[Astro14]

Chris - Those look like great results. I had plenty of TBN left at 7,500 miles on both Pennzoil Ultra and Mobil 1 0W40. You could run this GC a bit farther, to the factory OCI...

 

[Chris B.]

Any ideas on what the gritty black stuff is and if it is a problem?

 

[Sam_Julier]

Originally Posted By: Chris B.
Any ideas on what the gritty black stuff is and if it is a problem?


Have you put a magnet to the black stuff?

 

[Chris B.]

Originally Posted By: Sam_Julier
Originally Posted By: Chris B.
Any ideas on what the gritty black stuff is and if it is a problem?


Have you put a magnet to the black stuff?


No....did not think to do that. Dang! Filter is long gone!

 

[Sam_Julier]

I run magnetic drain plugs on both the oil and transmission on the Volvo, just oil on the Honda. The first change is always an eye opener. On subsequent drains there's always some metal on the plug. I've used them for years from various mfg's; so far the Dimple plug seems to have the strongest magnet for the longest time.

 

[r34dy2fly]

One more change on PU and I'll be switching over to GC. PU was on sale here where as GC was $9/qt.