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06-25-2016, 11:29 PM | #1 |
Scooby Newbie
Member#: 365428
Join Date: Aug 2013
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2010 Impreza OBS Oil Consumption
Hi everyone, I'm new to NASIOC but I've had this car for about 3 years now and have developed an oil consumption/disappearing issue I would like to ask about. Car is 2010 Impreza OBS with 130k
About every 850-1000 miles I'm burning up about 1qt of oil. Some say this is "normal" but it randomly just started to happen a few thousand miles ago so something has "changed". When I first got the car (with 72k miles) the oil was always steady full but at about 115k it began to disappear. I now have 130k on the car. No oil leaks that I can see except a little seepage in the pass side rear cylinder spark plug hole. No where near enough leak to cause any problems or misfires. (The plug wasn't even oily) Here is a pic of a spark plug for diagnosis(They all look the same): They are a little old but to me it doesn't look like a plug that has been burning 1qt every thousand miles for 15k. I see no leaks on the ground and no blowback under the car. I have already changed the PCV (OEM Subaru) with no change in consumption. Any ideas?
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06-25-2016, 11:34 PM | #2 |
Scooby Specialist
Member#: 251046
Join Date: Jul 2010
Chapter/Region:
MAIC
Location: Mostly at my home
Vehicle:2004 WRX Wagon Stage 5.1.2a.2 |
What oil are you running?
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06-25-2016, 11:43 PM | #3 |
Scooby Newbie
Member#: 365428
Join Date: Aug 2013
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Currently running 5w30
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06-26-2016, 02:33 PM | #4 |
Scooby Specialist
Member#: 251046
Join Date: Jul 2010
Chapter/Region:
MAIC
Location: Mostly at my home
Vehicle:2004 WRX Wagon Stage 5.1.2a.2 |
5/30 of what variety? If your running a synthetic, then there's your answer. Our cars seem to love a good 5/40. There is supporting evidence for several brands to go with. Off the top, motul and rotella T6 have great UOAs with the EJ motors.
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06-26-2016, 02:35 PM | #5 |
Scooby Specialist
Member#: 251046
Join Date: Jul 2010
Chapter/Region:
MAIC
Location: Mostly at my home
Vehicle:2004 WRX Wagon Stage 5.1.2a.2 |
And for giggles (or not) you might as well do a compression test while you're pulling plugs and stuff. Easy and may yield further info on the health of your motor.
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06-28-2016, 10:08 PM | #6 |
Scooby Newbie
Member#: 3409
Join Date: Jan 2001
Chapter/Region:
NWIC
Location: Oly
Vehicle:98 My FMIC Is bigger than yours. |
How's your PCV valve? They're cheap, I'd recommend replacing it as they can cause oil consumption. Get an OEM one, not aftermarket.
How's your driving style? Lots of engine braking? High RPM driving? Heavy on the throttle? Those will all cause oil consumption. What KIND of oil are you using? If you're using whatever is cheap, try the oe/Idemitsu or a euro spec oil. |
01-29-2017, 04:41 PM | #7 |
Scooby Newbie
Member#: 462114
Join Date: Jan 2017
Vehicle:2017 Impreza Sport Crystal White Pearl |
New to the forum and looking for advice in buying my first Subie. This is the closest thread I can find on the 2010 Impreza, so maybe you guys can point me in the right direction. I'm looking for a daily driver and found a 2010 Impreza on Craigslist. It has ~170,000 miles on it and I'm wondering if it would be worth buying. He has it listed at $5,500, but I think I can talk him down some since the KBB value is only $4,500 for excellent condition. He says he needs to fix a power steering fluid leak, but that's about it. Long term, he says the next owner should get new motor mounts and replace some suspension parts.
Is this car too high mileage to get me through 4 years of medical school and maybe a few years after that? Is this car prone to having problems? I'll be in school, so I can't drop a lot of money into random repairs but I can definitely maintain it. I have read about this model eating oil and sometimes gasket problems, but it seems hit-or-miss. Any advice or insight? Thanks in advance! |
02-03-2017, 11:53 PM | #8 |
Scooby Newbie
Member#: 415503
Join Date: Mar 2015
Chapter/Region:
MAIC
Location: Nova
Vehicle:2016 WRX limited black silica |
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02-05-2017, 01:59 AM | #9 | |
Scooby Newbie
Member#: 3409
Join Date: Jan 2001
Chapter/Region:
NWIC
Location: Oly
Vehicle:98 My FMIC Is bigger than yours. |
Quote:
If you can, get it in the air or crawl under it and look for drips. Look at the bottom of the engine between the exhaust and oil pan. Head gaskets were probably done once, and might be about due again but then again they could be bone dry. They're good cars, but like any they have to be maintained. I currently own two first gen Imprezas, a 96 OBS with 230k and a 93 with 248k. The 96 I pulled the engine and resealed, the 93 I'll need to do the same as soon as I've got room freed up in the garage. |
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02-18-2018, 08:07 PM | #10 |
Scooby Newbie
Member#: 482281
Join Date: Feb 2018
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is there such a thing as normal oil consumption for our cars?
mine is a 2010 subaru STI and been consuming oil despite good leakdown test and compression test. Installed crawford V3 AOS and it helped a lot but during trackdays would still consume oil |
02-19-2018, 08:50 AM | #11 | |
NASIOC Supporter
Member#: 30669
Join Date: Dec 2002
Chapter/Region:
Tri-State
Location: USA, North NJ, 07456
Vehicle:1998 Legacy 2.5GT Silver Sleeper BK, 5MT |
Quote:
I replied to you in another thread. |
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02-20-2018, 12:37 PM | #12 |
Scooby Newbie
Member#: 148146
Join Date: May 2007
Chapter/Region:
AKIC
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About your oil burning, I also had the same problem 1-2 years ago. I mainly used Mobile 1 5W-30 and it was burning the oil every 1000 miles (from full to empty). Penzoil was better but still had to top off oil at every 2000 miles.
After reading posts on this forum, I found that Rotella T6 5W-40 was highly rated. The owner's manual will specify the oil range but for my 2007 Impreza, it fits. I gave it a shot and it works very well. The engine starts up faster and the ride feels smoother (at least for me - could be in my head). I top off this oil every 3000 miles and perform an oil change every 5000 miles. |
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