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M1 0-40, 3.395K, 2006 WRX STI #4440806
06/25/17 03:57 AM
06/25/17 03:57 AM
Joined: Oct 2014
Posts: 94
SWFL
chado_skins Offline OP
chado_skins  Offline OP
Joined: Oct 2014
Posts: 94
SWFL
made a switch to M1 0-40. previous fill was castrol gtx 5-30. i forgot to mention to [censored] that i had my oil pickup tube replaced during the last interval, so if silicon comes up that's why. seems the oil did shear just a tad. i'll probably run it out to 4k next time. located in SW FL. low mileage STi engine that's been swapped into a 1998 RS2.5. anyone see any reason to not stay with this oil/grade ?

Code:
Oil Type: M10-40
Make up oil used: 0
Miles unit:   30.667k    24.879k
Mileage oil:  3395       3417
Date:         7/16       5/17      AVG

Aluminum       2           3        4
Chromium       1           1        2
Iron           6           7        20
Copper         6           6        10
Lead           1           1        1
Tin            1           0        0
Molybdenum     66          60       77
Nickel         1           0        0
Manganese      0           0        0
Silver         0           0        0
Titanium       0           0        0
Potassium      0           1        1
Boron          201         49       136
Silicon        30          11       18
Sodium         6           4        4
Calcium        2750        1098     2083
Magnesium      24          585      387
Phosphorus     848         583      777
Zinc           937         717      944
Barium         0           0        0

[email protected] 210F      62.5        57.2     63-76
cSt @100C      10.93       9.42     11.1-14.8
Flashpoint     395         385      >375
Fuel %         <.5         <.5      <2
Antifreeze %   0           0        0
Water %        0           0        0
Insolubles %   .2          .2       <.6
TBN            7                    >1



Last edited by chado_skins; 06/25/17 03:58 AM.
Re: M1 0-40, 3.395K, 2006 WRX STI [Re: chado_skins] #4440810
06/25/17 04:02 AM
06/25/17 04:02 AM
Joined: Mar 2015
Posts: 5,420
Virginia
bbhero Offline
bbhero  Offline
Joined: Mar 2015
Posts: 5,420
Virginia
Looks great to me. Oil viscosity is well within spec, TBN is extremely good, and there seems to be no issues with other contaminants. Keep it rolling with this Mobil 1.


Nissan Altima 3.5 Coupe
Mobil Super 5w30 Wix 57356
"Treat your family like your friends and treat your friends like your family."
Re: M1 0-40, 3.395K, 2006 WRX STI [Re: chado_skins] #4440842
06/25/17 05:43 AM
06/25/17 05:43 AM
Joined: Sep 2010
Posts: 7,489
Texas & Global
4WD Online confused
4WD  Online Confused
Joined: Sep 2010
Posts: 7,489
Texas & Global
Good run.
You are obviously conservative to run M1 short - why not at least 5k - so easy to remember when it's time to change.


2018 Chevy 1500 Z71 4WD
2017 Chevy Tahoe LT 4WD
2014 Fusion Hybrid Titanium
2013 Cruze LTZ - RS Turbo
Re: M1 0-40, 3.395K, 2006 WRX STI [Re: chado_skins] #4440856
06/25/17 06:14 AM
06/25/17 06:14 AM
Joined: Feb 2016
Posts: 318
MD
claluja Offline
claluja  Offline
Joined: Feb 2016
Posts: 318
MD
Which one is the M1? Dates and mileage seem confusing?


2014 F250 6.7L PSD
2006 Sequoia 4.7L
2005 E500 5.0L
2018 Jeep Rubicon, Pentastar 3.6L
Re: M1 0-40, 3.395K, 2006 WRX STI [Re: chado_skins] #4440880
06/25/17 06:59 AM
06/25/17 06:59 AM
Joined: Nov 2012
Posts: 234
NorCal
Seventh Offline
Seventh  Offline
Joined: Nov 2012
Posts: 234
NorCal
Looks great.

And thanks for reminding me how much I miss my GC8

Re: M1 0-40, 3.395K, 2006 WRX STI [Re: chado_skins] #4440898
06/25/17 07:25 AM
06/25/17 07:25 AM
Joined: Jul 2007
Posts: 276
East Texas
mitsuman47 Offline
mitsuman47  Offline
Joined: Jul 2007
Posts: 276
East Texas
Sorry to derail, but what word could have possibly been censored in the OP?

Re: M1 0-40, 3.395K, 2006 WRX STI [Re: mitsuman47] #4440907
06/25/17 07:35 AM
06/25/17 07:35 AM
Joined: Dec 2005
Posts: 10,296
Upper Midwest
kschachn Online content
kschachn  Online Content
Joined: Dec 2005
Posts: 10,296
Upper Midwest
Originally Posted By: mitsuman47
Sorry to derail, but what word could have possibly been censored in the OP?

Just quote the post and it will show the censored word(s).


1994 BMW 530i, 238K
1996 Honda Accord, 266K
1999 Toyota Sienna, 407K
2000 Toyota ECHO, 280K
Re: M1 0-40, 3.395K, 2006 WRX STI [Re: chado_skins] #4440920
06/25/17 07:49 AM
06/25/17 07:49 AM
Joined: Sep 2016
Posts: 524
Fairfax, VA
TinyVoices Offline
TinyVoices  Offline
Joined: Sep 2016
Posts: 524
Fairfax, VA
Love gc8s. Any reasons you are not running T6 like the majority of the Subaru community?


2010 Mazda RX8 Sport - 37k miles - ????
2006 Toyota Matrix XR AWD (Wife) - 130k miles - Valvoline Max Life 5w30
Re: M1 0-40, 3.395K, 2006 WRX STI [Re: mitsuman47] #4440933
06/25/17 08:05 AM
06/25/17 08:05 AM
Joined: Jun 2016
Posts: 3,566
MN
oil_film_movies Offline
oil_film_movies  Offline
Joined: Jun 2016
Posts: 3,566
MN
Originally Posted By: mitsuman47
Sorry to derail, but what word could have possibly been censored in the OP?
You can see it if you look at a reply-quote. I don't know what he could mean by using that acronym for cow manure there.

I'd try Castrol Edge 0w40 or Pennzoil 0w40 (either Euro or SRT flavors), all at Walmart or Amazon, as they are usually more shear stable than M1 0w40. The M1 dropped in visc quickly, and its done that to a lot of people.

Re: M1 0-40, 3.395K, 2006 WRX STI [Re: chado_skins] #4440949
06/25/17 08:33 AM
06/25/17 08:33 AM
Joined: Apr 2008
Posts: 37,920
Ontario, Canada
OVERKILL Offline
OVERKILL  Offline
Joined: Apr 2008
Posts: 37,920
Ontario, Canada
Is this the new FS formula or the previous one? Also, are the dates in the headings wrong?

UOA looks good though. Minor fuel (going by the drop in flashpoint) which will explain a bit of the viscosity loss.


2018 RAM 1500 Big Horn EcoDiesel
2016 Grand Cherokee SRT
Re: M1 0-40, 3.395K, 2006 WRX STI [Re: mitsuman47] #4441101
06/25/17 12:01 PM
06/25/17 12:01 PM
Joined: Oct 2014
Posts: 94
SWFL
chado_skins Offline OP
chado_skins  Offline OP
Joined: Oct 2014
Posts: 94
SWFL
the abbreviation for Black Stone. talk about PG lol.

Re: M1 0-40, 3.395K, 2006 WRX STI [Re: 4WD] #4441105
06/25/17 12:03 PM
06/25/17 12:03 PM
Joined: Oct 2014
Posts: 94
SWFL
chado_skins Offline OP
chado_skins  Offline OP
Joined: Oct 2014
Posts: 94
SWFL
Originally Posted By: 4WD
Good run.
You are obviously conservative to run M1 short - why not at least 5k - so easy to remember when it's time to change.



yes i was a bit conservative on the first run, i wasn't sure how much it was going to go out of grade. i'll let it go longer next time for sure.

Re: M1 0-40, 3.395K, 2006 WRX STI [Re: claluja] #4441108
06/25/17 12:05 PM
06/25/17 12:05 PM
Joined: Oct 2014
Posts: 94
SWFL
chado_skins Offline OP
chado_skins  Offline OP
Joined: Oct 2014
Posts: 94
SWFL
Originally Posted By: claluja
Which one is the M1? Dates and mileage seem confusing?



the most recent is the M1, previous fill is castrol dino.

Re: M1 0-40, 3.395K, 2006 WRX STI [Re: TinyVoices] #4441111
06/25/17 12:09 PM
06/25/17 12:09 PM
Joined: Oct 2014
Posts: 94
SWFL
chado_skins Offline OP
chado_skins  Offline OP
Joined: Oct 2014
Posts: 94
SWFL
Originally Posted By: TinyVoices
Love gc8s. Any reasons you are not running T6 like the majority of the Subaru community?



technically the body code is GM6. gc8's are oem turbo'd and gc8 never existed in USDM vehicles. this one happens to be turbo'd, but the oem chassis code is not gc8.

never used T6. heard some folks getting good results from this so i figured i'd give it a shot.

Re: M1 0-40, 3.395K, 2006 WRX STI [Re: OVERKILL] #4441115
06/25/17 12:11 PM
06/25/17 12:11 PM
Joined: Oct 2014
Posts: 94
SWFL
chado_skins Offline OP
chado_skins  Offline OP
Joined: Oct 2014
Posts: 94
SWFL
Originally Posted By: OVERKILL
Is this the new FS formula or the previous one? Also, are the dates in the headings wrong?

UOA looks good though. Minor fuel (going by the drop in flashpoint) which will explain a bit of the viscosity loss.



is there a way to tell from the bottle which formula it is? otherwise i'm not really sure. the dates in the headings are correct. last year this was a weekend vehicle, it's my daily now. the more recent flashpoint actually increased.

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