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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 uoa’s, more frequent oil changes don’t really speed up the process.
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Old 12-29-2018, 09:42 AM   #3427
jasonwrx86
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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
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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 uoa’s:

https://www.bobistheoilguy.com/used-oil-analysis/
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Old 01-23-2019, 07:44 PM   #3431
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Thank you for the link. After reading the article I’m 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
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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
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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 it’s 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
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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 I’m 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 DIT’s 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 it’s a different story. Even with good uoa’s there’s no guarantee that you won’t 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
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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
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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
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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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Old 03-31-2019, 09:16 PM   #3439
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Damn, not that good with this UOA. M1 EP 5w30. I even thought i changed the oil too early. Was going to change this oil out during summer lol



Worked well in my C7Z, not so much in the wrx. Good thing because i just put castrol magnatec 5w30. See how that is for a couple of months. THen doing another oil change end of summer.
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Old 04-01-2019, 12:07 AM   #3440
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Quote:
Originally Posted by ITLXLR8 View Post
Damn, not that good with this UOA. M1 EP 5w30. I even thought i changed the oil too early. Was going to change this oil out during summer lol



Worked well in my C7Z, not so much in the wrx. Good thing because i just put castrol magnatec 5w30. See how that is for a couple of months. THen doing another oil change end of summer.
How hot does your oil get on a regular basis?
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Old 04-01-2019, 07:54 AM   #3441
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Originally Posted by ITLXLR8 View Post
Damn, not that good with this UOA. M1 EP 5w30. I even thought i changed the oil too early. Was going to change this oil out during summer lol







Worked well in my C7Z, not so much in the wrx. Good thing because i just put castrol magnatec 5w30. See how that is for a couple of months. THen doing another oil change end of summer.


Pretty typical DIT UOA IMO. Still showing some break-in wear and typical DIT fuel dilution. Nothing wrong with the oil.
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Old 04-01-2019, 08:52 AM   #3442
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Originally Posted by bluesubie View Post
Pretty typical DIT UOA IMO. Still showing some break-in wear and typical DIT fuel dilution. Nothing wrong with the oil.
In my 2016 wrx i never had dillution issues or anything above single digit ppm copper or iron for 5k intervals with a lot of cold start idling and beating the piss out of it. (I always ran german spec oils though). For 2k miles that looks terrible. If its all short trips its understandable, but if the oil gets up to temp often, something is wrong.
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Old 04-01-2019, 06:14 PM   #3443
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Quote:
Originally Posted by n2oiroc View Post
In my 2016 wrx i never had dillution issues or anything above single digit ppm copper or iron for 5k intervals with a lot of cold start idling and beating the piss out of it. (I always ran german spec oils though). For 2k miles that looks terrible. If its all short trips its understandable, but if the oil gets up to temp often, something is wrong.

I used the same oil in my C7Z, that UOA with 3k+ miles looks a lot better.

The UOA i posted for the wrx, that was my 3rd oil run since ownership, from 5,743 miles to 7,795 miles exact.

Magnatec is in the engine now. Will drain it at 10k or just shy of it and get another UOA. The car is a lease so honestly i don't care for the long term. I just don't want issues now while it's in my possession.

Car is also a daily driver. So it gets used everyday. LOts of stop and go, lots of idling, lots of short trips (that's probably the culprit), lots of quick start/shut off since my driveway has tandem parking so if a car in front of me has to leave, i move the car to let them leave, park it back and shut it off. That doesn't happen a lot but it does happen, i'm sure with everybody.

Honestly after about 18-19 months with the car, i'm not happy with it. Can't wait until the lease is over lol
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Old 04-02-2019, 07:42 AM   #3444
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Originally Posted by ITLXLR8 View Post
LOts of stop and go, lots of idling, lots of short trips (that's probably the culprit), lots of quick start/shut off since my driveway has tandem parking so if a car in front of me has to leave, i move the car to let them leave, park it back and shut it off.
Yep, that’ll do it. Guessing the actual fuel dilution is 4-5%.
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Old 04-02-2019, 08:39 AM   #3445
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Quote:
Originally Posted by ITLXLR8 View Post
Car is also a daily driver. So it gets used everyday. LOts of stop and go, lots of idling, lots of short trips

Honestly after about 18-19 months with the car, i'm not happy with it. Can't wait until the lease is over lol
Maybe you're not happy with it because you don't get to take it out and stretch it's legs

stop and go in any car isn't fun
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Old 04-02-2019, 05:54 PM   #3446
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Maybe you're not happy with it because you don't get to take it out and stretch it's legs

stop and go in any car isn't fun

It's a daily, i obviously take it out lol

It's just not a car i thought it would be. It's still a fun car. But the gearing sucks, and it's slow. Rattles and vibrates galore, and because the gearing sucks, makes driving stick everyday terrible.

It's a good car, i'm just not happy with it. Which is why i can't wait for this lease to be over.
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Old 04-02-2019, 05:56 PM   #3447
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Originally Posted by bluesubie View Post
Yep, that’ll do it. Guessing the actual fuel dilution is 4-5%.
Yeah, i have to be more careful on the short trips. For instance this morning before work, started it up, drove to the store to get coffee and had to shut it off, with oil temp not even past 100F lol.

I'll just have to do more frequent oil changes from now until lease end.
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Old 04-02-2019, 07:04 PM   #3448
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Originally Posted by ITLXLR8 View Post
Yeah, i have to be more careful on the short trips. For instance this morning before work, started it up, drove to the store to get coffee and had to shut it off, with oil temp not even past 100F lol.

I'll just have to do more frequent oil changes from now until lease end.
Just take it out for a fun drive once a week or something.
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Old 04-02-2019, 07:06 PM   #3449
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Originally Posted by ITLXLR8 View Post
It's a daily, i obviously take it out lol

It's just not a car i thought it would be. It's still a fun car. But the gearing sucks, and it's slow. Rattles and vibrates galore, and because the gearing sucks, makes driving stick everyday terrible.

It's a good car, i'm just not happy with it. Which is why i can't wait for this lease to be over.
IDK what else do you own to call it slow. It's not that slow.
When was the last time you take her to the redline in at least first 3 gears?
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Old 04-02-2019, 07:09 PM   #3450
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Quote:
Originally Posted by ITLXLR8 View Post
It's a daily, i obviously take it out lol

It's just not a car i thought it would be. It's still a fun car. But the gearing sucks, and it's slow. Rattles and vibrates galore, and because the gearing sucks, makes driving stick everyday terrible.

It's a good car, i'm just not happy with it. Which is why i can't wait for this lease to be over.
i felt the same way about my 2016 wrx. its not a bad car for the money, but there are far better cars out there. i dont miss it one bit.
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