Used Oil Analysis

Tech discussions on the L77 6.0L V8.
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thirdgenfarmer
Posts: 60
Joined: Sat Apr 29, 2017 4:47 pm

Used Oil Analysis

Post by thirdgenfarmer » Mon Sep 11, 2017 3:32 pm

I just got the results back from a UOA w/ Blackstone Labs. I have been curious about doing this for years but never wanted to spend the money ($28) and never had any real reason to monitor my oil in this way.

I decided to go ahead and send a sample in because of the potential lifter issues and not knowing the history of my car. I'm not sure if I will continue to do so with every oil change or just update once/year or something. These results aren't guarantees of no issues in an engine, but can certainly give an idea of what is going on. I feel confident that I can continue driving without worrying about defective lifters eating my cam as we speak etc.

Has anyone else done a used oil analysis on these cars? How much reliance would you place on a UOA?
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2011 9c1

"It's got a cop motor, a 364-cubic-inch plant. It's got cop tires, cop suspension, cop shocks..."

thirdgenfarmer
Posts: 60
Joined: Sat Apr 29, 2017 4:47 pm

Re: Used Oil Analysis

Post by thirdgenfarmer » Mon Nov 06, 2017 7:43 pm

Follow up sample, sent @ only 4k miles on the oil. I was anxious as I had noticed some oil consumption, but I know believe to be at a fairly "normal" rate for these engines.
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2011 9c1

"It's got a cop motor, a 364-cubic-inch plant. It's got cop tires, cop suspension, cop shocks..."

thirdgenfarmer
Posts: 60
Joined: Sat Apr 29, 2017 4:47 pm

Re: Used Oil Analysis

Post by thirdgenfarmer » Fri Jul 27, 2018 5:01 am

Updated - @ 90k miles there was a small blip in iron levels. I'm thinking that this was mainly due to the timing of my collection (near the end of the draining).
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2011 9c1

"It's got a cop motor, a 364-cubic-inch plant. It's got cop tires, cop suspension, cop shocks..."

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Mooseman
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Location: Ottawa, ON Canada
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Re: Used Oil Analysis

Post by Mooseman » Fri Jul 27, 2018 3:56 pm

What oil filter are you using? Seems to be doing a good job.
2011 Caprice PPV, 1 of possibly 4 in Canada!
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thirdgenfarmer
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Joined: Sat Apr 29, 2017 4:47 pm

Re: Used Oil Analysis

Post by thirdgenfarmer » Thu Aug 02, 2018 3:38 pm

The standard ACDelco part - I believe a PF48.
2011 9c1

"It's got a cop motor, a 364-cubic-inch plant. It's got cop tires, cop suspension, cop shocks..."

CapriceX2
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Joined: Sat Jun 22, 2019 3:06 pm

Re: Used Oil Analysis

Post by CapriceX2 » Fri Aug 09, 2019 6:09 pm

Thanks for sharing. Nice to have a "database" to refer to.
Did you change oil brands on that last sample? Some of the additive elements changed significantly. For example, calcium dropped from around 2000 ppm down to 1600. Magnesium jumped from about 10 to 466ppm. Quite possible that supertech changed formulations as well.
I'll likely take a sample from mine at the next oil change.
CapriceX2
2011 Caprice 9C3
1995 Caprice Classic Wagon

thirdgenfarmer
Posts: 60
Joined: Sat Apr 29, 2017 4:47 pm

Re: Used Oil Analysis

Post by thirdgenfarmer » Fri Aug 09, 2019 8:11 pm

I have used the Supertech Full Synthetic exclusively as far as I can recall - I did just switch to high mileage however I have not sent in a sample with that oil yet.
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2011 9c1

"It's got a cop motor, a 364-cubic-inch plant. It's got cop tires, cop suspension, cop shocks..."

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