Filter pictures HPL 0W30 6,000 miles, 2002 Volvo XC70

Astro14

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I have been using HPL 0W30 Euro formula in my wife’s 2002 Volvo XC70. It’s a mildly turbocharged 2.4 liter 5 cylinder. The engine has 286,000 miles, all original, nothing beyond seals replaced. It has a relatively new, and clean, PCV system. The engine itself is clean inside, through there is a bit of varnish (borescope through drain plug examination a while back).

Prior to the HPL, I used exclusively ACEA A3/B4 oils, from Pennzoil, Mobil, and Castrol. Intervals ranged from 7,500 miles to 5,000 miles. Lately, it’s been closer to 5,000 miles.

The filter is a Mahle.

Of interest is the same carbon caught by the media as @wwillson saw on his filter in this thread:


The carbon is gritty, and while only a tiny bit is visible on the surface of the media itself, the filter likely had more captured in the media. I’ve had this car, and engine, for a bit over 200,000 miles, and I am surprised by both the carbon, which I haven’t seen captured in the filter in this engine before, and how dark the filter and oil had become over the 6,000 miles.

The engine is on its second run of HPL 0W30, and I look forward to seeing what the current filter (also Mahle) looks like when it comes out.

I would be speculating if I were to guess at the source of the carbon. Volvos are known to plug up their PCV systems, and that material is often similar in appearance - hard, black, carbonaceous. The PCV system is one potential source, and in that case, I’m glad for the cleaning. The ring lands/pistons would be another possibility, as carbon of similar appearance can build up there.

Either way, it’s clear that some form of cleaning is taking place.
 

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Are you speculating that the HPL is cleaning some carbon that may have been left behind by the PCV system at some point prior to replacement? If so, seems a likely answer to me. But at 286k you have t have an in-depth knowledge of that engine. Impressive run with a small displacement turbo nonetheless.
 

Astro14

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Are you speculating that the HPL is cleaning some carbon that may have been left behind by the PCV system at some point prior to replacement? If so, seems a likely answer to me. But at 286k you have t have an in-depth knowledge of that engine. Impressive run with a small displacement turbo nonetheless.
The left behind carbon in the PCV is one possibility. Carbon subsequent to the replacement is another. Pistons and or ring lands is yet another. Turbocharger bearings would be a possibility as well.

I have no way of knowing.

But I will keep running the HPL and cutting up the filters. I have to confess that this is the first filter I cut.

So, there is a possibility that this is normal, but I think that unlikely because I have always examined the filters previously, and I think I probably would’ve seen it in the depths of the pleats, as I did on this. No way to know for certain.

As far as the engine itself - original block, head, and turbo. Several sets of plugs. A few timing belts. Engine crank and cam seals (the result of a failed PCV system, which led to the PCV system replacement.).

But the big parts are original. That alone is gratifying.

In fact, the transmission is original, too. As is the angle gear and rear differential. All are known to fail on Volvos but I believe that a lack of specified fluid changes on all of those parts is largely to blame.
 
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I have been using HPL 0W30 Euro formula in my wife’s 2002 Volvo XC70. It’s a mildly turbocharged 2.4 liter 5 cylinder. The engine has 286,000 miles, all original, nothing beyond seals replaced. It has a relatively new, and clean, PCV system. The engine itself is clean inside, through there is a bit of varnish (borescope through drain plug examination a while back).

Prior to the HPL, I used exclusively ACEA A3/B4 oils, from Pennzoil, Mobil, and Castrol. Intervals ranged from 7,500 miles to 5,000 miles. Lately, it’s been closer to 5,000 miles.

The filter is a Mahle.

Of interest is the same carbon caught by the media as @wwillson saw on his filter in this thread:


The carbon is gritty, and while only a tiny bit is visible on the surface of the media itself, the filter likely had more captured in the media. I’ve had this car, and engine, for a bit over 200,000 miles, and I am surprised by both the carbon, which I haven’t seen captured in the filter in this engine before, and how dark the filter and oil had become over the 6,000 miles.

The engine is on its second run of HPL 0W30, and I look forward to seeing what the current filter (also Mahle) looks like when it comes out.

I would be speculating if I were to guess at the source of the carbon. Volvos are known to plug up their PCV systems, and that material is often similar in appearance - hard, black, carbonaceous. The PCV system is one potential source, and in that case, I’m glad for the cleaning. The ring lands/pistons would be another possibility, as carbon of similar appearance can build up there.

Either way, it’s clear that some form of cleaning is taking place.
Looks like it’s doing good. Thank You
 
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Appreciate you sharing this. Even on car engines that should be fairly clean, its a good idea to change the filter early if using the HPL products.

The Euro 0W-30 looks to be good stuff. C3 rated with good TBN.
 
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Thanks for the pictures. The oil is doing its job, as is the filter. Even with an engine that appears clean, there's areas you can't see that can collect carbon deposits. I'd be curious to see a before and after compression and leakdown test on an engine to see what improvement would come from cleaning around the rings.
 
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