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Old 12-28-2018, 04:47 PM   #3426
bluesubie
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I would go with at least 3k since the more robust factory fill additives likely help with break-in. People change early in an effort to get the metals out, but if you compare uoas, more frequent oil changes dont really speed up the process.
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Old 12-29-2018, 09:42 AM   #3427
jasonwrx86
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Quote:
Originally Posted by bluesubie View Post
I would go with at least 3k since the more robust factory fill additives likely help with break-in. People change early in an effort to “get the metals out”, but if you compare uoa’s, more frequent oil changes don’t really speed up the process.
Any metals big enough that can cause damage is going to be caught by the filter anyway.
Any metals small enough to pass filter will be ground down by the engine.
Bikes have clutch in the engine oil and I have never heard of clutch material not captured by the filter.
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Old 01-05-2019, 01:08 AM   #3428
CrimeaRiver
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Here is my 15 WRX history of reports. I used few oils and did analysis for each distinct one:

stock engine:
24k: Motul 8100 X-cess
34k: Mobil1 5w30, non-esp
stage 1 (cobb)
41k: Amsoil 5w40
53k: Amsoil 5w30

now running M1 ESP

Last edited by CrimeaRiver; 01-05-2019 at 01:14 AM.
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Old 01-23-2019, 07:43 AM   #3429
Kilroy007
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Here is my first UOA with my 2017 WRX. Subaru Synthetic 5w30 with 3,871 miles.

I replaced the oil with Motul 8100 X-clean 5w30 EFE and hope it will test as a higher viscosity than the Subaru oil. Other than low viscosity, why does Subaru synthetic get so much hate? I have a short (3 miles one way) commute to work and my oil temp doesn't reach full operating temp most trips and all my wear numbers look great to me. And after looking at many other UOA from the "better" oils, high copper levels seems to be a trend.

Does Subaru synthetic really deserve the hate? I am also new to UOAs so please excuse my ignorance.
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Old 01-23-2019, 08:13 AM   #3430
bluesubie
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Quote:
Originally Posted by Kilroy007 View Post
Does Subaru synthetic really deserve the hate?

No, not at all. People will do one uoa on the Subaru oil and it will have a used viscosity of a 20 grade and they proclaim it is the worst oil on the planet. Or they will have a failure after modifying their car to Stage 2 and state the same.

This is a great article about uoas:

https://www.bobistheoilguy.com/used-oil-analysis/
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Old 01-23-2019, 07:44 PM   #3431
Kilroy007
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Thank you for the link. After reading the article Im strongly considering going back to using the Subaru synthetic oil depending on the results I get from the Motul X-clean. The Subaru synthetic appears to work well in my car but I might shorten the OCI in an attempt to maintain a higher viscosity.
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Old 01-23-2019, 09:30 PM   #3432
wiUFsh
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It's awesome to see this thread continue almost 4.5 years after I created it.

Thanks guys. Keep the conversations going.
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Old 01-23-2019, 09:54 PM   #3433
JRowland
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Quote:
Originally Posted by wiUFsh View Post
It's awesome to see this thread continue almost 4.5 years after I created it.

Thanks guys. Keep the conversations going.
Thanks for creating it and its nice to see you still around as well.
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Old 01-23-2019, 11:10 PM   #3434
Celery GT-5
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Quote:
Originally Posted by wiUFsh View Post
It's awesome to see this thread continue almost 4.5 years after I created it.

Thanks guys. Keep the conversations going.
Except after 3400 posts the consensus is now, meh just use Subaru oil
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Old 01-24-2019, 08:00 AM   #3435
bluesubie
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Default 2015 WRX Used Oil Analysis Thread

Quote:
Originally Posted by Kilroy007 View Post
Thank you for the link. After reading the article Im strongly considering going back to using the Subaru synthetic oil depending on the results I get from the Motul X-clean. The Subaru synthetic appears to work well in my car but I might shorten the OCI in an attempt to maintain a higher viscosity.


X-clean will have a higher viscosity since it starts higher and ACEA C3 oils have a higher High Temp High Shear (check out HTHS in the Oil Selection Guide sticky). Some GF5 oils shear to a 20 grade in 2,000 miles or less (or from fuel dilution).

Generally the DITs show good uoa results even on oils with an operational viscosity of a 20 grade on 100% stock cars. Start modding, get a bro-tune, track the car, etc, and its a different story. Even with good uoas theres no guarantee that you wont have a failure.

It will be interesting to see how Ascents are holding up after a couple of years running 0W20.
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Old 02-05-2019, 01:48 PM   #3436
rodhotter
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not a subie but on the same lines. girlfriends 13 malibu LS 2.5L DI naturally aspirated was dring spec 5-20 semi syn when new, a qt on a thou. then synthetic 10-30 was put in + cut consumption to qt on 3 thou, now as it gets worse a 5-40 euro spec in it + no adding in 2500 miles. engines like humans are all different so use what works for you + your climate.
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Old 02-11-2019, 06:59 PM   #3437
Nazfizzle
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Default Mobile 1 ESP 5W-30 Used Oil Analysis and TBN

Got my first used analysis and TBN done on my 2018 WRX (6speed, premium).

Break-in period I kept RPM below 4,000 and varied between 5th and 6th gear on freeway travel every so often. My engine burns zero oil.

@1,000 miles: Oil change with Mobile 1 ESP 5W-30 and OEM filter.
@6,000 miles: Oil change with Mobile 1 ESP 5W-30 and OEM filter.
@9,000 miles: Installed PERRIN AOS (OB-2 says nominal air/fuel ratio, vacuum pressures, maximum boost, etc. Installation affected no factory performance parameters.)
@10,000 miles: Oil change with Mobile 1 ESP 5W-30 and OEM filter.

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Old 02-12-2019, 12:12 PM   #3438
bluesubie
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Default 2015 WRX Used Oil Analysis Thread

Silicon and copper still showing the typical elevated break-in levels. Probably not much difference in wear metals if you would have done only one or two oil changes at this mileage. As long as it helps you sleep better at night.
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