Blackstone vs. Wix UOA (Used Oil Analysis) - Subaru Outback - Subaru Outback Forums

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Old 02-22-2013, 02:04 PM   #1 (permalink)
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Default Blackstone vs. Wix UOA (Used Oil Analysis)

Hi all,

I've posted the Blackstone UOAs from my cars here, but here's something different.

I just bought a bunch of Wix UOAs from Amazon for less than $11 each.

I wanted to see how the Wix UOA would compare to the Blackstone UOAs, so I sent a sample from my last oil change to both. I took both samples at the same time, and even poured oil back and forth between the two containers so that each lab received the exact same oil.

The differences are large, but at least they're pretty consistent.

One surprise: I had understood that Blackstone's total base numbers (TBN) tended to be different, but their number is about the same as Wix's.

Regarding timing, it took Blackstone about 2 weeks to e-mail me my results, and it took Wix 3 weeks to send me the results by snail mail. Blackstone's website is better. Wix's website is buggy, and I haven't been able to access my results on-line at all.
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File Type: pdf Blackstone Wix UOAs.pdf (407.9 KB, 181 views)
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Old 02-22-2013, 02:12 PM   #2 (permalink)
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I think I like Blackstone's report better. Seems more information is explained there. I will be sending my first sample into Blackstone soon.
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Old 02-22-2013, 02:18 PM   #3 (permalink)
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Blackstone's service is definitely better, but you pay for it...

In any case, I like that Blackstone sends out the kits for free and only charges for the analysis (Wix charges for the kits, which include analysis). Blackstone is faster, and Blackstone's analysis is easier to make sense of (and lists "normal" parameters).

However, Blackstone's UOAs cost $25-30, whereas Wix is less than half that for comparable results.
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Old 02-22-2013, 02:20 PM   #4 (permalink)
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no fuel test from WIX, did I miss it?
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Old 02-22-2013, 02:37 PM   #5 (permalink)
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The oil in my grand prix is literally BURNED. I'd be interested to see what the Blackstone report would be on that, especially considering the oil has about 10 miles on it.
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Old 02-22-2013, 09:57 PM   #6 (permalink)
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You might want to do more work on editing out your personal info in that pdf.

Can read it just fine.
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Old 02-22-2013, 10:31 PM   #7 (permalink)
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Quote:
Originally Posted by 1 Lucky Texan View Post
no fuel test from WIX, did I miss it?
Yeah, you're right... I'm not sure if that's a problem or not.


Quote:
Originally Posted by AWDFTW View Post
You might want to do more work on editing out your personal info in that pdf.
Yeah, I'm not too worried about it. My real name, address, and phone number aren't that hard to figure out, anyway...
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Old 02-23-2013, 07:21 AM   #8 (permalink)
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Blackstone and Oil Analyzers Inc both do a good job. I prefer the latter because they include TBN testing at no extra charge. They also test for oxidation and nitration rather than just showing "total solids". The Ox/Nitr numbers provide insight into how well the engine is running and if the emission control system is functioning properly. Of course you have to understand how to interpret the raw data.

The TBN's measured by Blackstone tend to run lower than other labs. However they are consistent from test to test....

TS
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Old 02-23-2013, 10:08 AM   #9 (permalink)
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Has anyone tried Polaris Labs? The information on their website would lead one to believe that they are a leader in the industry, with most of their business being industrial fluid analysis. They also offer the service of training others to start their own labs.

Just wondering. I do like the Blackstone lab reports.
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Old 02-24-2013, 02:09 AM   #10 (permalink)
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Oil Analyzers contracts out their testing to Polaris labs throughout the US. That's really who I was referring to.

TS
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