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Old 02-16-2013, 06:29 PM   #1
tjmazz13
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Default STi consuming lots of oil!

I have a 2004 STi with 117k miles on it and about every 2 weeks I need to add like 3 quarts of oil.

I did a compression test, all the numbers were good.

Checked for leaks, and there were none.

Checked turbo for shaft play, there is none.

What else could it be?!
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Old 02-16-2013, 06:50 PM   #2
HinshawWRX
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Define "all numbers were good?"
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Old 02-16-2013, 07:28 PM   #3
tjmazz13
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#1 - 140psi #2 - 135psi #3 - 145psi #4 - 132psi
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Old 02-16-2013, 07:46 PM   #4
05_r6
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3 qts in 2 weeks is a lot of oil. I have to add about 1 qt every 2000 miles which is about avg from what i hear. Check your intake and intercooler for oil.
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Old 02-16-2013, 08:30 PM   #5
WaitTheresMore
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sounds like a blown turbo seal
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Old 02-16-2013, 08:56 PM   #6
dellman600
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sounds like blown ringland to me
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Old 02-16-2013, 09:17 PM   #7
Slimsti
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Quote:
Originally Posted by dellman600 View Post
sounds like blown ringland to me
Compression wouldn't be that consistent. I'd pull the turbo and check for bad seals or a bent fin. Are u blowing clouds of smoke at idle? While cruising? Under boost? Have u ever replaced ur pcv valve? Also check the oil feed line to the turbo. Have someone rev the car to 2500-3000 to build pressure and see if its leaking.

Last edited by Slimsti; 02-16-2013 at 09:28 PM.
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Old 02-17-2013, 06:00 PM   #8
carnz-pj-410
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We are changing his PCV on monday, I know the guy he bought the turbo from and it was mint at the time, anything is possible I know.

His PCV is original and I have a new one for his car in my shop so thats where we are starting.
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Old 02-17-2013, 06:06 PM   #9
Cois32
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Turbo.
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Old 02-17-2013, 10:37 PM   #10
DerekB707
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I'd change the pcv and go from there. Hopefully its something simple like that. My buddies wrx was doing the same thing, but not quite as much oil consumption and he traced it down the pcv.
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Old 02-18-2013, 08:53 AM   #11
indytruckboy
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the car probably should not be driven in the meantime......
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Old 02-18-2013, 12:24 PM   #12
walhalla
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agreed.
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Old 02-18-2013, 12:43 PM   #13
yenny
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maybe do a leakdown test
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Old 02-18-2013, 07:45 PM   #14
Baja_Gernaut
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that sounds about right When I do an oil change with mobile1 synthetics I burn up all four quarts within the 1500 miles. I add another 4 quarts and the oil lasts until the next oil change. I know it sounds crazy but it is so true. I just laugh that I have to spend around 50 bucks in oil between oil changes
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Old 02-19-2013, 04:11 AM   #15
Uncle Scotty
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Quote:
Originally Posted by Baja_Gernaut View Post
that sounds about right When I do an oil change with mobile1 synthetics I burn up all four quarts within the 1500 miles. I add another 4 quarts and the oil lasts until the next oil change. I know it sounds crazy but it is so true. I just laugh that I have to spend around 50 bucks in oil between oil changes



oh my gawd

this is one of the DUMBEST things i have ever seen posted, here
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Old 02-19-2013, 04:12 AM   #16
Uncle Scotty
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OP has a blown motor....if it isnt leaking it all over the ground under the engine

its toast
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Old 02-19-2013, 01:14 PM   #17
renblock
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ringland if your blow off valve or recirc valve is unsually oily
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Old 02-19-2013, 02:42 PM   #18
trev762
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Quote:
Originally Posted by renblock View Post
ringland if your blow off valve or recirc valve is unsually oily
Im not sure about that Scotty I think this one takes the cake/
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Old 02-20-2013, 10:30 AM   #19
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Quote:
Originally Posted by Baja_Gernaut View Post
that sounds about right When I do an oil change with mobile1 synthetics I burn up all four quarts within the 1500 miles. I add another 4 quarts and the oil lasts until the next oil change. I know it sounds crazy but it is so true. I just laugh that I have to spend around 50 bucks in oil between oil changes
Hahaha wtf? Is this real life?
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Old 02-20-2013, 02:18 PM   #20
tuzzio
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Quote:
Originally Posted by Baja_Gernaut View Post
that sounds about right When I do an oil change with mobile1 synthetics I burn up all four quarts within the 1500 miles. I add another 4 quarts and the oil lasts until the next oil change. I know it sounds crazy but it is so true. I just laugh that I have to spend around 50 bucks in oil between oil changes
I hope you can't afford to fix it after
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Old 02-20-2013, 06:49 PM   #21
GrumpyPitbull
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Quote:
Originally Posted by Baja_Gernaut View Post
that sounds about right When I do an oil change with mobile1 synthetics I burn up all four quarts within the 1500 miles. I add another 4 quarts and the oil lasts until the next oil change. I know it sounds crazy but it is so true. I just laugh that I have to spend around 50 bucks in oil between oil changes
Say hello to the next generation of Subaru owner lol.
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Old 02-20-2013, 07:21 PM   #22
endrswrd
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No. Just no.
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Old 02-20-2013, 07:33 PM   #23
C4RBON_F1BER
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OP, have you checked your crank case pressure? I've seen a bunch of oil get pushed through a turbo due to high crank case pressures (not in a Subaru, though). Just something else to check.
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Old 02-20-2013, 08:08 PM   #24
guroove
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Do a search, and you'll find Uncle Scotty is right. It doesn't mean you need a new engine right now, but if you intend to drive the car like it was meant to be driven, it won't last very long, and it will keep consuming oil until the motor is replaced or rebuilt. I managed to put 40,000 miles on my last motor over the course of over 2 years after it started consuming oil. PCV and turbo oil consumption is never this severe. When it's this bad, it's the shortblock.
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Old 02-20-2013, 11:31 PM   #25
WRXSteye20008
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I was going through almost the same thing about 2.5qts every 700 miles and it was a broken ringland on #4. Take off you TMIC and see if there is oil in there as well as in your downpipe. A great and simple test; start the car until it is warm, take the oil cap off. Is there any trace of smoke coming from it? It sounds like you are getting massive amounts of blow by as there is no oil present on the outside of your engine. Do you take your car to IAG?
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