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Old 10-10-2012, 12:56 PM   #26
dave07
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I lose about a .5-1 quarts of oil between oil changes. I think it's normal. Probably blow by. Just top it off if it's low.
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Old 10-10-2012, 01:15 PM   #27
shamrock 05
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Quote:
Originally Posted by Uncle Scotty View Post


neither one of my modded wrx's has burned oil

my 06 goes 7k-8k between changes and i dont and havent ever added oil between changes

somebody is doing something wrong

aint me
We can all agree that the burning oil vs not burning oil goes back and forth. Many subarus DO burn oil....the turbocharger is "oil cooled" Now I dont know how hot the turbo actually gets, but oil will get burnt off. My friend bought a brand new Forester and drove it off the lot and it burned oil from the get go. It all has to do with tolerances in the motor. Call a subie dealer and ask them about burning oil. Subaru says burning 1 qt per 1K miles is perfectly fine within factory specs.......and for the guys who dont burn oil, u must have had Tuesday-thursday built cars My car was built on a Monday and yes it consumes a bit of oil at 125K mi
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Old 10-10-2012, 02:04 PM   #28
Uncle Scotty
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Quote:
Originally Posted by shamrock 05 View Post
We can all agree that the burning oil vs not burning oil goes back and forth. Many subarus DO burn oil....the turbocharger is "oil cooled" Now I dont know how hot the turbo actually gets, but oil will get burnt off. My friend bought a brand new Forester and drove it off the lot and it burned oil from the get go. It all has to do with tolerances in the motor. Call a subie dealer and ask them about burning oil. Subaru says burning 1 qt per 1K miles is perfectly fine within factory specs.......and for the guys who dont burn oil, u must have had Tuesday-thursday built cars My car was built on a Monday and yes it consumes a bit of oil at 125K mi
the above is full of so many different variables as to be an exercise in pointlessnes

any NEW car will almost certainly use oil in the first few thousand miles as it breaks in...and TRUE 'break in' is WAY longer than that magic 1000 miles that so many are deluded into thinking it is

calling the dealer is a fools errand and only an idiot would think of asking any dealer about what they have to say to cover their ass

and the real reason that many of us...usually older, wiser, guys...dont have any oil burning/use issues is that we broke the car in PROPERLY AND WE USE THE RIGHT OIL

i personally think that too wimpy a break in is the MAIN and REAL reason that we see so much oil consumption in these cars
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Old 10-10-2012, 03:10 PM   #29
shamrock 05
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........

Last edited by shamrock 05; 10-10-2012 at 03:17 PM.
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Old 10-10-2012, 03:15 PM   #30
SWP n Gold
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Car: 2010 WRX
Mods: Stage 1 + catback
Break-in: According to the owner's manual
Oil: Non-synthetic from dealer
Interval: 3,750 miles

I don't burn or consume any oil between oil changes.
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Old 10-10-2012, 05:03 PM   #31
maizer89
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ever since i switched to rotella t6 5w-40 i've never had an oil burning issue, even with the numerous track days still just do the oil changes at 3750 though to follow the guidelines until my engine warranty runs out
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Old 10-10-2012, 05:52 PM   #32
makopolo
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Just to make sure you are checking it right.

Level ground
Enough time to cool drain down

The difference you see is only about half a quart so a slight incline or just after parking it would give you that.
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Old 10-10-2012, 06:02 PM   #33
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Must be a 2012 thing.
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Old 10-10-2012, 11:31 PM   #34
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My '12 has been stage 1 since 240 miles, had a relatively hard break in, and doesn't use any oil. My '11 was under the same circumstances and did not use any either.
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Old 10-11-2012, 12:10 AM   #35
lj8915
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Question: What is "blow by" and where does it go?
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Old 10-11-2012, 09:21 AM   #36
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Quote:
Originally Posted by lj8915 View Post
Question: What is "blow by" and where does it go?
What is blow-by?
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Old 10-13-2012, 09:29 AM   #37
shamrock 05
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^^^^^^"Blow-by occurs when the explosion that occurs in your engine’s combustion chamber causes fuel, air and moisture to be forced past the rings into the crankcase. Your engine’s rings must maintain an excellent fit in order to contain the pressure.

The causes of blow-by: wear, soot and deposits

As rings and cylinder liners wear away they are less capable of maintaining this seal. Consequently as a car ages the amount of blow-by that occurs can increase.
Soot and deposits left over from incomplete combustion that collect on the rings can also inhibit their seal worsening blow-by.

The effects of blow-by: loss of horsepower and oil contamination and dilution

Blow-by inhibits performance because it results in a loss of compression. When the expanding gases slip past the rings they cannot as effectively push the piston down and make the vehicle go. As a result the car will have less horsepower. This also results in a loss of fuel economy.

When the fuel, air and moisture slip into the crankcase they contaminate and dilute the oil in the crankcase.

Among the many gasses in your compression chamber are unburned fuel, moisture, sulfur dioxide and soot. Once these gasses slip into your crankcase they can dilute into your engine causing great damage.

The detergents and Molybdenum Disulfide work together to clean the soot and deposits off of your rings allowing them to better seal the combustion chamber.

The Moly fills the crevices in the cylinder walls providing a better seal"




So by that definition..... if you have blowby you will have a lower compression. A new car should not have low compression.......however these 2.5L do have ring issues.
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Old 10-13-2012, 01:41 PM   #38
aerosaaber
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I've got about 119k on my 06 (don't know how it was broken in)
use whatever synthetic is on sale 5w30 usually, 10w30 summer time.
Seems to lose about 1/2-3/4 of a quart between 4k miles changes.
The same as every other car I've owned (that wasn't actively leaking from the valve cover gasket like my old 900 turbo)
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Old 10-13-2012, 01:47 PM   #39
MaddMax
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Some oil usage is entirely normal and not necessarily indicative of a problem. Most all manufactuers state that consuming 1 QT of oil every 1,200 miles is acceptable, though I feel that is excessive and between all the cars my wife and I have owned, none consumed major amounts of oil. Our old 98 LGT wagon (EJ25) consumed about 1/2 QT every 3K miles and my wife's 07 Outback consumes about 300ml every 3K miles. My 03 Infiniti G35 consumed about 1/2 QT every 4K miles and my 96 Maxima consumed 1/2 QT every 5K miles. My 2012 WRX only has 5500 miles of which I've already done oil changes at 1,000 and 3,750 miles. I haven't observed any oil consumption, but initial oil changes have been so frequent that it's hard to monitor much. Many will tell you minor amounts of oil conumption is the sign of a strong motor. Also, oil consumption naturally will go up as oil breaks downs and looses viscosity. Lots of stop and go driving without full warm ups will kills oil much quicker than highway driving. Lots of unbruned off fuel in the oil kills it as the months pile on. Don't solely go by miles, also consider time, especially if you do lots of short distance city driving. My wife's Outback consumes no oil in the summer when the kids are out of school. Once they're in school and she's doing two daily 5 mile roundtrips to school, consumption starts up again.

FYI, LOTS of different makes of motors consume oils. Lots of Hondas, BMWs, Nissan products, Toyotas, etc drink oil. This isn't a Subaru specfic problem nor really is a "problem" in most cases.

Last edited by MaddMax; 10-13-2012 at 01:56 PM.
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Old 10-19-2012, 08:36 AM   #40
joem01
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'12 wrx with 2,250. Had to add almost a full qt of oil. Did the recommended break in to 500 miles. Used almost no oil. I'd say from 1,000 to 2,000 I was running into full boost pretty regularly (hey I didn't buy a Prius, I bought a fun car). Just topped it off and am currently running running the motor up to 4k max to until the 3,750 oil change to confirm its just blow by. Honestly not too worried. At over 14psi at max boost, blow by is a normal byproduct for certain engines. Some burn oil, some don't. At stage 2, even more so.
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Old 10-19-2012, 08:46 AM   #41
1BadP71
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Just check it at every fill up. This thread is so full of opinions it's mind numbing.
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Old 10-19-2012, 03:43 PM   #42
1-3-2-4
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Quote:
Originally Posted by Uncle Scotty View Post
i personally think that too wimpy a break in is the MAIN and REAL reason that we see so much oil consumption in these cars
AMEN! But to those who will latch onto this, it doesn't mean to 'drive it like you stole it' right off the lot.
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Old 10-19-2012, 04:03 PM   #43
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Break it in hard, properly seat the rings and valves, and you won't burn oil.

Baby it in, and you might be f'd.

This is a friggin epidemic in the VW community with the 2.0l turbo motors. Those that followed break in procedures are going through oil and motors at epic rates.
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Old 10-19-2012, 05:12 PM   #44
Uncle Scotty
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Quote:
Originally Posted by joem01 View Post
'12 wrx with 2,250. Had to add almost a full qt of oil. Did the recommended break in to 500 miles. Used almost no oil. I'd say from 1,000 to 2,000 I was running into full boost pretty regularly (hey I didn't buy a Prius, I bought a fun car). Just topped it off and am currently running running the motor up to 4k max to until the 3,750 oil change to confirm its just blow by. Honestly not too worried. At over 14psi at max boost, blow by is a normal byproduct for certain engines. Some burn oil, some don't. At stage 2, even more so.
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