Mahle OX149 cartridge filter, 2002 Volvo V70XC with 301,xxx miles. I’ve cut apart a couple of these before, and the filters are good. Well-made, hard for me to cut with a knife, and they hold up well.
This car is on its fifth run or so of HPL 0W30 Euro oil. So, this filter, represents run number four on the HPL.
I posted about the car before, and this is one where I dropped the sump, and cleaned it up a couple years ago. Photos of that sump shown in this thread:
Thread 'Volvo dealer used abrasive wheel to clean engine sump'
https://bobistheoilguy.com/forums/t...d-abrasive-wheel-to-clean-engine-sump.374594/
Now, when I dropped the sump, I was careful to clean all of the carbon. At least, all the carbon I could reach. That was about 25,000 miles ago. Yet this filter still had a significant amount of carbon in the pleats. The carbon is gritty, but if you apply pressure it crumbles in your fingers.
So, clearly, the HPL is not done cleaning the engine. Whatever carbon I could not reach, and I’m sure there was plenty in the cylinder head, and perhaps the rings, is being dissolved, circulated, and caught by the filter.
The car has always used a bit of oil, a quart every 1500 to 2000 miles. The car is back in the shop for some Sound system, and other interior work at the moment, and 1000 miles into this run, 1000 miles after the filter shown, the oil level hasn’t moved at all, so I am hopeful that perhaps, the root cause of the oil burning is being mitigated by the cleaning that’s taken place. Only time will tell on that.
Here is the filter:
Some close-ups of the pleats, carbon tracks shown.
Very similar to this - https://bobistheoilguy.com/forums/threads/volvo-cartridge-c-p-2004-xc90-using-hpl-0w30.383676/
And not much different than the previous C&P.
https://bobistheoilguy.com/forums/t...-hpl-0w30-6-000-miles-2002-volvo-xc70.360166/
I did find this teeny bit. I mentioned that I cleaned the sump a couple years ago, and I did use an actual bronze brush, the kind that you get for cleaning firearms.
Despite my best efforts, it appears that a tiny bit of bronze brush was left somewhere in the engine and got caught by the filter on this run.
This car is on its fifth run or so of HPL 0W30 Euro oil. So, this filter, represents run number four on the HPL.
I posted about the car before, and this is one where I dropped the sump, and cleaned it up a couple years ago. Photos of that sump shown in this thread:
Thread 'Volvo dealer used abrasive wheel to clean engine sump'
https://bobistheoilguy.com/forums/t...d-abrasive-wheel-to-clean-engine-sump.374594/
Now, when I dropped the sump, I was careful to clean all of the carbon. At least, all the carbon I could reach. That was about 25,000 miles ago. Yet this filter still had a significant amount of carbon in the pleats. The carbon is gritty, but if you apply pressure it crumbles in your fingers.
So, clearly, the HPL is not done cleaning the engine. Whatever carbon I could not reach, and I’m sure there was plenty in the cylinder head, and perhaps the rings, is being dissolved, circulated, and caught by the filter.
The car has always used a bit of oil, a quart every 1500 to 2000 miles. The car is back in the shop for some Sound system, and other interior work at the moment, and 1000 miles into this run, 1000 miles after the filter shown, the oil level hasn’t moved at all, so I am hopeful that perhaps, the root cause of the oil burning is being mitigated by the cleaning that’s taken place. Only time will tell on that.
Here is the filter:
Some close-ups of the pleats, carbon tracks shown.
Very similar to this - https://bobistheoilguy.com/forums/threads/volvo-cartridge-c-p-2004-xc90-using-hpl-0w30.383676/
And not much different than the previous C&P.
https://bobistheoilguy.com/forums/t...-hpl-0w30-6-000-miles-2002-volvo-xc70.360166/
I did find this teeny bit. I mentioned that I cleaned the sump a couple years ago, and I did use an actual bronze brush, the kind that you get for cleaning firearms.
Despite my best efforts, it appears that a tiny bit of bronze brush was left somewhere in the engine and got caught by the filter on this run.
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. Good pics 
