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#2726793 - 08/27/12 04:39 PM PU 5W30 SN - 2011 WRX - 7,480 Miles
KHP Offline


Registered: 08/01/11
Posts: 168
Loc: Reno, NV
Just wanted to share my latest UOA. Oil used is PU 5W30 SN with Subaru OEM filter(Honeywell Blue Can).

IMO the oil is working pretty well with the engine. I'm planning on staying with current oil, and filter for future 7,500 mile OCI's. I will also stop the half interval samples as I feel that I've gotten sufficient trend info from previous samples. I will not be extending my oil changes past 7,500 miles to preserve my car warranty.

This car is my DD. My driving consists of 75/25 highway/city driving. 15-20 Minutes to work 1 way. Tons of mountain driving. Desert temperatures of 100+ summer and <30 (Fahrenheit) winter temperatures. Some spirited driving once in a while. The car engine has no modifications.

Quote:
Blackstone's Comments:
This is a great report. This is one of the longest oil runs across the page yet metals are just about
as low as we've ever seen from your particular Subaru engine. Iron has been lower than this in the past, but
that was after shorter oil runs. We expect iron to accumulate in the oil as the oil sees more use, so really,
this reading of 12 ppm is excellent considering the nice, long oil run. The TBN shows some active additive
left at 2.4 since 1.0 is low. The TAN measured 5.0, which probably isn't too acidic at all. No coolant, water,
or fuel was found. Try 9,000 miles next.


Samples Dated: 05/04/12 and 10/23/11 are half interval samples to create trend. Oil and filter were not changed at time of sampling.
Code:
Miles on Oil ---------- 7,480 -------- 3,780 -------- 7,538 -------- 3,813 -------- 3,744 ----- 2,718     Universal
Miles on Unit          22,520         18,820         15,040         11,315          7,502       3,758     Averages
Sample Date          08/12/12       05/04/12       02/04/12       10/23/11       07/23/11    03/12/11
Make Up Oil added ------ 0Qts --------- 0Qts ------ 0.75Qts --------- 0Qts --------- 0Qts ------ 0Qts

Aluminum ------------------ 4 ------------ 4 ------------ 5 ------------ 4 ------------ 4 --------- 5 ----------- 4
Chromium                    1              1              1              1              1           0             1
Iron                       12              8             16             10             17          13             9
Copper -------------------- 6 ------------ 4 ------------ 8 ------------ 8 ------------ 8 --------- 7 ----------- 8
Lead                        0              0              0              0              0           0             4
Tin                         0              0              0              0              0           5             1
Molybdenum --------------- 52 ----------- 51 ----------- 64 ----------- 78 ---------- 109 ------- 247 ---------- 74
Nickel                      1              0              1              1              0           0             0
Manganese                   3              3              0              0              0           1             1
Silver -------------------- 0 ------------ 1 ------------ 0 ------------ 0 ------------ 0 --------- 0 ----------- 0
Titanium                    2              2              2              3              3           0             0
Potassium                   3              3              5              1              2           0             2
Boron -------------------- 51 ----------- 79 ----------- 34 ----------- 51 ----------- 62 -------- 21 ---------- 48
Silicon                     6              4              8              8             10          18            11
Sodium                      6              7             31             37             38           2            27
Calcium ---------------- 2175 --------- 2177 --------- 1155 --------- 1163 --------- 2678 ------ 2186 -------- 2083
Magnesium                 101            104            639            608             19          11           305
Phosphorus                624            672            660            667            789         706           783
Zinc -------------------- 752 ---------- 754 ---------- 786 ---------- 774 ---------- 936 ------- 741 --------- 932
Barium                      0              0              0              0              0           0             0


SUS Viscosity @ 210F --- 57.9 --------- 57.8 --------- 55.2 --------- 56.6 --------- 56.4 ------ 53.9
cSt Viscosity @ 100C     9.62           9.58           8.83           9.23           9.19        8.46
Flashpoint in F           400            385            405            395            385         400
Fuel % ----------------- <0.5 --------- <0.5 --------- <0.5 --------- <0.5 --------- <0.5 ------ <0.5
Antifreeze %              0.0            0.0            0.0            0.0              ?         0.0
Water %                   0.0            0.0            0.0            0.0            0.0         0.0
Insolubles % ------------ 0.3 ---------- 0.3 ---------- 0.3 ---------- 0.4 ---------- 0.2 ------- 0.2
TBN                       2.4                           3.6
TAN                       5.0                           5.0
ISO Code ---------- PU 5W30SN ---- PU 5W30SN -- M1EP 5W30SN -- M1EP 5W30SN -- M1EP 5W30SM -- MbilCln 5000 5w30SM


Edited by KHP (08/27/12 04:40 PM)
_________________________
2011 Impreza WRX Limited (46k Mi): OCI = 7.5K Mi - Pennzoil Ultra 5w/10w30 - OEM blue oil filter/P1 PL14612

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#2726806 - 08/27/12 04:51 PM Re: PU 5W30 SN - 2011 WRX - 7,480 Miles [Re: KHP]
squareznboxez Offline


Registered: 08/15/12
Posts: 44
Loc: Sydney, Australia
great report, thanks for posting - 5w-40 seems to be a good medium for EJ20/25 motors
_________________________
'98 Nissan Skyline R34 25GT - 2.5L I6: Motul Chrono 300V 10w-40

'04 Subaru Forester SG9 XT - 2.5L H4: Mobil Delvac 1 ESP 5w-40

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#2726822 - 08/27/12 05:05 PM Re: PU 5W30 SN - 2011 WRX - 7,480 Miles [Re: KHP]
fdcg27 Offline


Registered: 09/25/09
Posts: 10995
Loc: OH
Looks good for a turbo Subie.
I'd say that PU is a good pick for this engine as you use it.
Your last run of M1 EP doesn't look any better, and it did require some oil adds, but the engine is more fully broken in for this run than it was then.
Does this engine use bearings without lead?
_________________________
12 Accord LX 36K PP 0W-20
09 Forester 67K PU 5W-30
02 Accord 144K GOil 5W-30
01 Focus ZX3 107K Meijer Syn 5W-20
95 BMW 318iC 150K Defy 10W-40

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#2726825 - 08/27/12 05:08 PM Re: PU 5W30 SN - 2011 WRX - 7,480 Miles [Re: KHP]
JRed Offline


Registered: 06/01/09
Posts: 1653
Loc: Virginia
Thin 5w-30 (almost 5w-20) in a turbocharged engine with such a high power density sporting a fairly small sump and without an external oil cooler is a no go to me in a hot climate.

It's working well for now, but a good 5w-40 or 0w-40 would be cheap insurance. If you can find PU 5w-40 that'd be dandy.
_________________________
06 Subaru Impreza WRX - Sold. The only mechanical thing I'll ever love.
07 Toyota Prius - Cheap synthetic and PureOne filters.

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#2726842 - 08/27/12 05:29 PM Re: PU 5W30 SN - 2011 WRX - 7,480 Miles [Re: KHP]
Donald Offline


Registered: 03/21/04
Posts: 15594
Loc: Upstate NY
Nice UOA. As usual, forget the B/S comments.
_________________________
2015 Subaru Forester 2.5 engine/CVT PP & M1
2001 Jeep Grand Cherokee Laredo 4.0 - PP & M1
1999 Dodge Ram 2500 w/Cummins - Rotella T6 & M1


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#2726858 - 08/27/12 05:50 PM Re: PU 5W30 SN - 2011 WRX - 7,480 Miles [Re: KHP]
Trav Offline


Registered: 11/20/06
Posts: 12242
Loc: MA, Mittelfranken.de
Looks great. PU is a great oil! I wouldn't change a thing.
_________________________
ASE L1, Master. Deutsch Meisterbrief.

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#2726969 - 08/27/12 07:31 PM Re: PU 5W30 SN - 2011 WRX - 7,480 Miles [Re: JRed]
dave1251 Offline


Registered: 07/15/05
Posts: 7640
Loc: Maricopa, AZ
Originally Posted By: JRed
Thin 5w-30 (almost 5w-20) in a turbocharged engine with such a high power density sporting a fairly small sump and without an external oil cooler is a no go to me in a hot climate.

It's working well for now, but a good 5w-40 or 0w-40 would be cheap insurance. If you can find PU 5w-40 that'd be dandy.


PU is thicker than M-1EP. There is nothing that screams about this UOA that 5W30 PU is less than sufficient.

OP thanks for the data this engine is looking good and either lubricant you chose will be fine for the factory recommended OCI once out of warranty you will be able to extend your OCI if you chose to. Are you planing future UOA's?
_________________________
make the inside of your engine oil cap white.
don't use.

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#2726990 - 08/27/12 07:52 PM Re: PU 5W30 SN - 2011 WRX - 7,480 Miles [Re: KHP]
tig1 Offline


Registered: 01/03/09
Posts: 10596
Loc: Illinois
Why such short OCIs?
_________________________
2007 Ford Fusion 162,000 miles
M1 0-20 AFE
2007 Ford Focus 143,000 miles
M1 0-20 AFE
10,000 mile OCIs on both engines
M1 ATF
M1 10-30 in all OPE
MC filters


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#2727026 - 08/27/12 08:23 PM Re: PU 5W30 SN - 2011 WRX - 7,480 Miles [Re: tig1]
The Critic Offline


Registered: 08/30/04
Posts: 18387
Loc: Walnut Creek, CA
Originally Posted By: tig1
Why such short OCIs?


Oi is used up, see the 2.4 TBN.

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#2727072 - 08/27/12 08:57 PM Re: PU 5W30 SN - 2011 WRX - 7,480 Miles [Re: tig1]
tinmanSC Offline


Registered: 09/07/10
Posts: 2165
Loc: Oswego, IL
Originally Posted By: tig1
Why such short OCIs?

It seems to be a Subaru thing. Their recommended OCI is 3,750 miles.
_________________________
Cost of Hobby=2L
(Where L=Cost of Lubricant)
95 Lexus SC300 5-spd@200K, 2000 GS300@125K both VML Full Syn+Purolator PSL20195(soon to be Wix)

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#2727074 - 08/27/12 08:57 PM Re: PU 5W30 SN - 2011 WRX - 7,480 Miles [Re: tig1]
dave1251 Offline


Registered: 07/15/05
Posts: 7640
Loc: Maricopa, AZ
Originally Posted By: tig1
Why such short OCIs?


OEM warranty. I suspect.
_________________________
make the inside of your engine oil cap white.
don't use.

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#2727223 - 08/28/12 12:05 AM Re: PU 5W30 SN - 2011 WRX - 7,480 Miles [Re: KHP]
KHP Offline


Registered: 08/01/11
Posts: 168
Loc: Reno, NV
Thanks for the responses guys. I'm keeping to the 7,500 mile standard OCI since its what's mentioned in the service schedule to honor the warranty(I'm covered for 7 years 75,000 miles). 3,750 mile OCI is for severe operations I wouldn't consider my driving as severe.

2011 models is the first year Subaru started pushing for the "extended" drain schedule of 7,500 miles and as from my results it seems very reasonable with today's quality oils.

I will continue to do lab analysis just not at the frequency that I'm doing right now. I'll be doing it every oil change and will stop the half cycle sampling.

I'm planning on switching to a heavier viscosity oil after my warranty is up and start playing with engine mods.

Do you guys know whether the newer Subaru engines Turbo EJ255, EJ257 have leaded bearings? It just seems odd and I guess exceptionally good that it hasn't shown a trace in my UOA's.


Edited by KHP (08/28/12 12:18 AM)
_________________________
2011 Impreza WRX Limited (46k Mi): OCI = 7.5K Mi - Pennzoil Ultra 5w/10w30 - OEM blue oil filter/P1 PL14612

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#2727240 - 08/28/12 01:19 AM Re: PU 5W30 SN - 2011 WRX - 7,480 Miles [Re: KHP]
gpshumway Offline


Registered: 06/18/08
Posts: 416
Loc: Minneapolis, MN
My UOAs generally show 2-3 ppm of lead, so I believe Subaru did use Lead bearings at least in 2007. It's always possible they've switched.

Thanks for being the guinea pig for GF-5 oil in a turbo Subie. Ultra seems to hold up pretty well.
_________________________
2007 Subaru WRX
2011 Honda Civic EX

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#2728443 - 08/29/12 06:31 AM Re: PU 5W30 SN - 2011 WRX - 7,480 Miles [Re: KHP]
bluesubie Offline


Registered: 08/04/03
Posts: 1993
Loc: NJ
You posted in the wrong forum. This should go in the Virgin Oil Analysis Forum. grin2 The lack of consumption makes me think those very low NOACK figures from the PDS might actually be correct. Thanks for posting. thumbsup

-Dennis
_________________________
'04 Subaru Forester 2.5XT
Castrol Edge 0W40

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#2728832 - 08/29/12 01:51 PM Re: PU 5W30 SN - 2011 WRX - 7,480 Miles [Re: bluesubie]
KHP Offline


Registered: 08/01/11
Posts: 168
Loc: Reno, NV
Originally Posted By: gpshumway
My UOAs generally show 2-3 ppm of lead, so I believe Subaru did use Lead bearings at least in 2007. It's always possible they've switched.

Thanks for being the guinea pig for GF-5 oil in a turbo Subie. Ultra seems to hold up pretty well.


Hmm.. I'm thinking that they might have switched bearing material...

I do enjoy doing controlled testing/experiment so I volunteered to take one for the team on this one (I can't help it. I'm an engineer lol...). I don't see any problems running this weight of oil on my Subie. If my engine fails now I'm not too sure that the little difference in viscosity (30 vs. 40 weight) at operating temperature would do too much to save the situation.

Originally Posted By: bluesubie
You posted in the wrong forum. This should go in the Virgin Oil Analysis Forum. grin2 The lack of consumption makes me think those very low NOACK figures from the PDS might actually be correct. Thanks for posting. thumbsup

-Dennis


Thanks! I gotta say that the very low NOACK figures may be correct as well. I didn't see any hint of oil consumption during this run. The oil seems to be very stable.


Edited by KHP (08/29/12 01:54 PM)
_________________________
2011 Impreza WRX Limited (46k Mi): OCI = 7.5K Mi - Pennzoil Ultra 5w/10w30 - OEM blue oil filter/P1 PL14612

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