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#4581667 - 11/22/17 07:34 AM Second oil change UOA 2018 STI Castrol edge
Spdfrk1990 Offline


Registered: 12/02/06
Posts: 134
Loc: Cincinnati
Here is my second UOA when using Castrol edge black bottle.
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18 Chevrolet Colorado Z71 4x4 V6 | Mobil 1 5w30 EP
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#4581679 - 11/22/17 08:08 AM Re: Second oil change UOA 2018 STI Castrol edge [Re: Spdfrk1990]
Danno Online   content


Registered: 10/07/12
Posts: 1988
Loc: Northern Ontario, Canada
UOA has no surprises. What will your OCI be once you are past engine break in?
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#4581729 - 11/22/17 09:31 AM Re: Second oil change UOA 2018 STI Castrol edge [Re: Danno]
Spdfrk1990 Offline


Registered: 12/02/06
Posts: 134
Loc: Cincinnati
Originally Posted By: Danno
UOA has no surprises. What will your OCI be once you are past engine break in?

I was thinking 4k or the 3800 that blackstone recommended.
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#4581742 - 11/22/17 09:55 AM Re: Second oil change UOA 2018 STI Castrol edge [Re: Spdfrk1990]
FermeLaPorte Offline


Registered: 07/25/17
Posts: 469
Loc: Texas (south)
With Mobil 1 you can actually extended the oil change intervals to 5k or 7k
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#4581829 - 11/22/17 11:43 AM Re: Second oil change UOA 2018 STI Castrol edge [Re: Spdfrk1990]
Spdfrk1990 Offline


Registered: 12/02/06
Posts: 134
Loc: Cincinnati
First UOA was factory fill of course. This one is Edge black bottle 5w30. My next UOA will be with Edge 5w30 gold bottle 2.5 qts and 2 qts of edge 0w40. I was surprised the black bottle edge did not shear down to a 20 weight like some people said it would.


Edited by Spdfrk1990 (11/22/17 11:44 AM)
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#4583899 - 11/24/17 06:14 PM Re: Second oil change UOA 2018 STI Castrol edge [Re: Spdfrk1990]
ZZman Offline


Registered: 03/17/08
Posts: 5775
Loc: Michigan
Not much Titanium
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#4584111 - 11/24/17 11:15 PM Re: Second oil change UOA 2018 STI Castrol edge [Re: Spdfrk1990]
Merkava_4 Offline


Registered: 01/30/07
Posts: 17501
Loc: Clovis, CA
I'd be worried about that copper and aluminum. And I disagree with Blackstone; I think 9.06 is too thin for a 5W-30.

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#4584174 - 11/25/17 05:54 AM Re: Second oil change UOA 2018 STI Castrol edge [Re: Spdfrk1990]
Spdfrk1990 Offline


Registered: 12/02/06
Posts: 134
Loc: Cincinnati
Its a new motor and the copper is going down so im not worried. Aluminum is only 9 ppm why would I worry about that?
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#4586542 - 11/27/17 12:08 PM Re: Second oil change UOA 2018 STI Castrol edge [Re: Spdfrk1990]
bluesubie Offline


Registered: 08/04/03
Posts: 2279
Loc: NJ
Originally Posted By: Spdfrk1990
First UOA was factory fill of course. This one is Edge black bottle 5w30. My next UOA will be with Edge 5w30 gold bottle 2.5 qts and 2 qts of edge 0w40. I was surprised the black bottle edge did not shear down to a 20 weight like some people said it would.

It did shear to a 20 weight. Blackstone's "Should be" values for viscosity aren't always in the actual SAE J300 range for a given viscosity. Not sure why, but it causes a lot of confusion. Anything below 9.3 is a 20 grade. And you also boosted the viscosity a bit by adding make-up oil. smile2

Even though you're still breaking it in, it's kind of odd that there was an uptick in aluminum so just keep an eye on it. And be careful following Blackstone's (or anyone's) advice on OCI's. They will not offer Powertrain Warranty coverage in the event of a failure.


Edited by bluesubie (11/27/17 12:22 PM)
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#4586554 - 11/27/17 12:29 PM Re: Second oil change UOA 2018 STI Castrol edge [Re: Spdfrk1990]
Spdfrk1990 Offline


Registered: 12/02/06
Posts: 134
Loc: Cincinnati
Thanks. My first uoa was only 1300 miles so thats why the aluminum was less on the first uoa. I plan to use 0w40 from now on as well. The viscosity was still better then the factory fill at only 1300 miles as well.


Edited by Spdfrk1990 (11/27/17 12:32 PM)
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#4586577 - 11/27/17 12:55 PM Re: Second oil change UOA 2018 STI Castrol edge [Re: Spdfrk1990]
bluesubie Offline


Registered: 08/04/03
Posts: 2279
Loc: NJ
Originally Posted By: Spdfrk1990
The viscosity was still better then the factory fill at only 1300 miles as well.

I wouldn't be surprised if the factory fill was designed to shear like that from the moment that the car is started for CAFE purposes. I don't recall ever seeing a "5W30" factory fill come back as a 30 grade, even when the n/a Forester and Outback specced 5W30.
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#4586612 - 11/27/17 01:19 PM Re: Second oil change UOA 2018 STI Castrol edge [Re: Spdfrk1990]
Spdfrk1990 Offline


Registered: 12/02/06
Posts: 134
Loc: Cincinnati
I really enjoy doing these UOA's though and seeing the results. I plan to do one every oil change on this car.
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18 Chevrolet Colorado Z71 4x4 V6 | Mobil 1 5w30 EP
18 KIA Stinger GT AWD Limited Edition Sunset Yellow

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#4586627 - 11/27/17 01:39 PM Re: Second oil change UOA 2018 STI Castrol edge [Re: Spdfrk1990]
John_Dude Offline


Registered: 07/19/16
Posts: 35
Loc: WA
Sheared out of grade in just 3k miles..... silicon is high. I dont think silicon numbers are affected by engine break-in, check your air filter. Are you using a cellulose disposable or oiled cotton gauze?


Edited by John_Dude (11/27/17 01:52 PM)

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#4586628 - 11/27/17 01:40 PM Re: Second oil change UOA 2018 STI Castrol edge [Re: John_Dude]
Spdfrk1990 Offline


Registered: 12/02/06
Posts: 134
Loc: Cincinnati
Originally Posted By: John_Dude
Sheared out of grade in just 3k miles..... silicon is high. I dont think silicon numbers are affected by engine break-in, check your air filter. Are you using a cellulose disposable or oiled cotton gauze?

You'd be better off with a 0w40 with the engine being that hard on a 30 grade, especially since its turbo-charged.


Silicone is high because it is a new engine and should lower over time like it has been I am told. This comes from the sealants used in engine assembly. It was 109 on the first UOA and now only 33. I suspect the next UOA to be even lower.


Edited by Spdfrk1990 (11/27/17 01:43 PM)
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#4586638 - 11/27/17 01:51 PM Re: Second oil change UOA 2018 STI Castrol edge [Re: Spdfrk1990]
John_Dude Offline


Registered: 07/19/16
Posts: 35
Loc: WA
Sealants are silicone, not silicon. "Silicones, also known as polysiloxanes, are polymers that include any inert, synthetic compound made up of repeating units of siloxane, which is a chain of alternating silicon atoms and oxygen atoms, frequently combined with carbon and/or hydrogen. "

You'd be better off with a 0w40 with the engine being that hard on a 30 grade, especially since its turbo-charged. I wouldn't bother with half 5w30 half 0w40, go with mobil 0w40. It has a viscosity of 12.9 CST @ 100c, which is just above the max viscosity of a 30 grade (12.5 cst). Should shear down to a mid-30 grade with how hard that engine churns the oil.


Edited by John_Dude (11/27/17 02:01 PM)

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