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Old 07-06-2016, 02:13 AM   #1
DutchOven
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Member#: 220629
Join Date: Aug 2009
Chapter/Region: SCIC
Vehicle:
2010 White WRX Hatch
2015 White WRX Limited

Default UOA: Shell Rotella T6 5W-40, 1.5 years, 10k miles 2010 WRX

Sorry I felt like this deserved its own thread because of the length of the interval i stretched it out to.

Not sure if I should be surprised with the results. Oil was in the car for around 1.5 years.

2010 WRX with 105k miles
-Only DD, no track.
-50% highway, 50% city/traffic (approximate)
-more than 100 short drives (<1.5 minutes) to move car
-Driven very hard whenever possible
-OEM filter, never changed until oil changed


Engine Specs:
-Built motor (forged pistons, rods, bearings, head studs, AOS)
-Killer B oil pan and pickup (capacity ~5.6qts total)
-Downpipe, Intake, EBCS, tune (290whp, 315wtq)



So is this oil any good for subarus?
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Old 07-06-2016, 03:16 AM   #2
oaklandish_WRX
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Join Date: Dec 2010
Chapter/Region: BAIC
Location: Ostinato Rigore
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2002 0[[XXXXoXXXX]]0
MBP LongRoof

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"lube added - 3 qt" WTF? typo?
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Old 07-06-2016, 04:15 AM   #3
DutchOven
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2015 White WRX Limited

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yeah i only put about 1qt in there during the interval.
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Old 07-06-2016, 08:18 AM   #4
bluesubie
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Member#: 767
Join Date: Jan 2000
Chapter/Region: Tri-State
Location: N.J.
Vehicle:
04 FXT

Default UOA: Shell Rotella T6 5W-40, 1.5 years, 10k miles 2010 WRX

Replenishing oil will boost the TBN and viscosity. Three quarts in 10k miles in my car would be normal (actually I'd probably burn a little more) so this is amazing if you only added 1 quart, IMO.

How do we know that you actually ran the oil for this long and for this many miles? Did you get this verified by an independent third party?
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Old 07-06-2016, 08:44 AM   #5
DutchOven
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2015 White WRX Limited

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The 1qt added was from another brand new jug of rotella i have in the car for top off. i measured how many i put in there by looking at how much is left in the big jug. the motor doesnt really burn much oil, surprisingly. the built motor has about 70k on it.

I have no idea what i can do to prove to anyone the length of this OCI but I don't have anything to gain by lying. My extension of this OCI was partly due to the new purchase of a 2015 WRX and me not really caring about the old car. I got my new car in January 2015, and I never performed any maintenance on the old car until just last month.

i posted this because i was very surprised with the results. i thought it would turn out really bad

Last edited by DutchOven; 07-06-2016 at 04:24 PM.
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Old 07-07-2016, 05:30 PM   #6
bluesubie
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Quote:
Originally Posted by DutchOven View Post

i posted this because i was very surprised with the results. i thought it would turn out really bad

I'm not surprised.

So many people base their OCI's on oil color, how it feels between their fingers, how it smells, or Joe Bob down the street that has been working on cars since 1973.

An EJ with a good tune (probably the most important part) running a robust oil can go well over SoA's recommendations. I really wish Subaru would drop this intervals based on time nonsense. It's not like a dealer would change the oil in a new car that sat on the lot for 7.5 or 6 months.

Of course, run an oil with much lower detergent/dispersant levels, add direct injection, and it's a different story.
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Old 07-07-2016, 08:27 PM   #7
424wrx
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08 wrx stg3 vf52
14 legacy, 11 fozzy

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Quote:
Originally Posted by bluesubie View Post
I'm not surprised.

So many people base their OCI's on oil color, how it feels between their fingers, how it smells, or Joe Bob down the street that has been working on cars since 1973.

An EJ with a good tune (probably the most important part) running a robust oil can go well over SoA's recommendations. I really wish Subaru would drop this intervals based on time nonsense. It's not like a dealer would change the oil in a new car that sat on the lot for 7.5 or 6 months.

Of course, run an oil with much lower detergent/dispersant levels, add direct injection, and it's a different story.
ive done my rotella t6 at 5000 on mine for most of my cars life. 74k miles, 22 psi, and uses no oil since new. been drag raced 15 passes and im not easy on her. i always warm it up a bit even in the summertime before driving. im happy nothing has gone wrong at all but a front o2 sensor in 8.5 years!
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