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Old 12-05-2013, 08:30 AM   #4376
Rememo
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Well... I was hoping mine wasn't a burner, but I think it is. I changed the oil at 4250 and made sure the oil was at the upper line. On the way to work today the oil light came on at 9134, so 4884 miles. Not a big deal to Subaru, but totally unacceptable to me.

I've said it before, but having owned 20+ cars in my lifetime, including many beaters, the only two that burned oil were an AMC Hornet and my Jeep CJ, and I suspect the Jeep was leaking more than it was burning. My 1996 Impreza didn't burn oil.
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Old 12-05-2013, 08:47 AM   #4377
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Quote:
Originally Posted by Chris793 View Post
Maybe a stupid question, but what are the the potential problems associated with a car that consumes oil, in 1qt per 2000-3000 interval? I would guess excessive carbon buildup and clogged cat, but are there more serious issues?

I ask assuming the owner is going to hold onto the car until at least 100,000 miles.
As oil gets burned in the combustion chamber, it effectively lowers the octane rating of the gasoline, causing detonation or pinging, slowly destroying your engine over a long period of time.

Also, sending burnt oil through the exhaust system will eventually ruin the cat converter.
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Old 12-05-2013, 10:40 AM   #4378
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Originally Posted by Ladeef View Post

As oil gets burned in the combustion chamber, it effectively lowers the octane rating of the gasoline, causing detonation or pinging, slowly destroying your engine over a long period of time.

Also, sending burnt oil through the exhaust system will eventually ruin the cat converter.
Interesting, I wasn't aware of the octane lowering effects of oil burning . So, this might be a stupid question, but should we oil burners use a higher octane gasoline?
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Old 12-05-2013, 10:57 AM   #4379
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Originally Posted by Oceanguy View Post

I can only suggest a lemon law attorney. What is considered acceptable to a manufacturer, does not have to be acceptable to the consumer. If you have all of the factory service records and documentation of the oil consumption issue, you will be better off.

Best of luck!
Hmm... That's not a horrible idea. I've never had to lawer-up for anything before so I'm not sure if it would be worth my time or money. Suppose I could look into it a little further.

If my oil consumption doesn't get much worse than what it currently is, I'll probably just grin-n-bear it until I'm in a slightly better financial situation. At that point I'll just sell the car (hopefully for a profit) and say goodbye to subaru forever.
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Old 12-05-2013, 11:13 AM   #4380
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Old 12-05-2013, 11:16 AM   #4381
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As oil gets burned in the combustion chamber, it effectively lowers the octane rating of the gasoline, causing detonation or pinging, slowly destroying your engine over a long period of time.
Can you provide sources for this? I can't find any octane ratings for motor oil.
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Old 12-05-2013, 01:40 PM   #4382
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Originally Posted by Commander Keen View Post

Can you provide sources for this? I can't find any octane ratings for motor oil.
I'm pretty sure he means that the octane rating of the fuel, not the motor oil.

Last edited by jr0bb5; 12-05-2013 at 02:53 PM.
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Old 12-05-2013, 02:36 PM   #4383
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^ I would think the gas and oil need to be mixed together first in order for that to happen anyway.

Sort of like how some of us put oil (TCW3, MMO) in our gasoline at roughly a 650:1 ratio. Even with that, it's not even enough to reduce the octane level by anything significant.
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Old 12-05-2013, 04:54 PM   #4384
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I'm pretty sure he means that the octane rating of the fuel, not the motor oil.
I understood. I'm just wondering what it is about motor oil that has such an effect on combustion.
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Old 12-06-2013, 12:35 PM   #4385
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Originally Posted by jr0bb5 View Post
Hmm... That's not a horrible idea. I've never had to lawer-up for anything before so I'm not sure if it would be worth my time or money. Suppose I could look into it a little further.

If my oil consumption doesn't get much worse than what it currently is, I'll probably just grin-n-bear it until I'm in a slightly better financial situation. At that point I'll just sell the car (hopefully for a profit) and say goodbye to subaru forever.
In PA - there is no cost or fees for Lemon Law procedures. The attorneys are paid separately from the settlement by the manufacturer of the vehicle. This is a consumer protection process not an ambulance chaser process (as some would like you to think). I would think it is the same in your state. PM me if you want some info.
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Old 12-06-2013, 01:47 PM   #4386
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Originally Posted by Angelus911 View Post
You are right, my bad. If it is a TSB though, would they cover it out of warranty, say at 90k? Probably not, then?
As huge a pita as it is getting the fix under warranty, I'd imagine its near impossible out of warranty.
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Old 12-09-2013, 10:40 AM   #4387
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Just a heads-up here.

http://techinfo.subaru.com/static/whatsNew.html

Dec. 3, 2013 TSB - Surface Treatment Change to Oil Control Piston Rings for 2012, 2013 Impreza/Crosstrek. Don't have an account so I can't paste it.
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Old 12-09-2013, 05:33 PM   #4388
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Originally Posted by john_coctostan View Post
Just a heads-up here.

http://techinfo.subaru.com/static/whatsNew.html

Dec. 3, 2013 TSB - Surface Treatment Change to Oil Control Piston Rings for 2012, 2013 Impreza/Crosstrek. Don't have an account so I can't paste it.
Hmm... coincidence?
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Old 12-12-2013, 06:28 PM   #4389
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I had an experience at my dealer tonight that would have been funny had I not been so livid over discovering that my Impreza is an oil burner.

I dropped it off to have the dealer perform an oil change, and inform them that I wanted to begin consumption testing.

When the service writer I was talking to asked how much oil I was burning, I said "a full quart in 4800 miles", and I kid you not, every service writer in the room spun their heads around in unison and like trained parrots said "Oh! You're doing really well! That's not bad at all!"

My blood was boiling. Clearly they have been trained to make that statement to anyone who argues the case. When I said that I've owned 15 cars in my lifetime and only two of them, which were high-mileage pieces of junk, burned any oil, they got very quiet.

I took my old Ford Ranger V6 on a 6500 mile tour of western America, through mountains and deserts, and it had the same oil level when I got home as when I left. Lets see the POS Impreza do the same. I'd barely make it half way.

I don't expect anything to come of the oil consumption testing, because it will be a couple of years before it's burning a quart every 1200 miles, and I'm sorry to say that I've lost all faith in Subaru.

Oh... and did you know that "Audi says it's OK to burn a quart every 800 miles!!" Like I give a flying fig leaf what Audi says in their owner's manual.

End rant...

Last edited by Rememo; 12-12-2013 at 07:27 PM.
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Old 12-12-2013, 07:10 PM   #4390
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Very concerning. Don't give up on subarus though. I have a modified wrx with 200k and don't burn that much oil. Possibly ring seating? Didn't have that issue with mine though. There are lemon laws. I would push the issue with them or go to a more reputable dealer. Sorry about your troubles. What a pita.
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Old 12-13-2013, 12:30 PM   #4391
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Quote:
Originally Posted by Rememo View Post
I had an experience at my dealer tonight that would have been funny had I not been so livid over discovering that my Impreza is an oil burner. I dropped it off to have the dealer perform an oil change, and inform them that I wanted to begin consumption testing. When the service writer I was talking to asked how much oil I was burning, I said "a full quart in 4800 miles", and I kid you not, every service writer in the room spun their heads around in unison and like trained parrots said "Oh! You're doing really well! That's not bad at all!" My blood was boiling. Clearly they have been trained to make that statement to anyone who argues the case. When I said that I've owned 15 cars in my lifetime and only two of them, which were high-mileage pieces of junk, burned any oil, they got very quiet. I took my old Ford Ranger V6 on a 6500 mile tour of western America, through mountains and deserts, and it had the same oil level when I got home as when I left. Lets see the POS Impreza do the same. I'd barely make it half way. I don't expect anything to come of the oil consumption testing, because it will be a couple of years before it's burning a quart every 1200 miles, and I'm sorry to say that I've lost all faith in Subaru. Oh... and did you know that "Audi says it's OK to burn a quart every 800 miles!!" Like I give a flying fig leaf what Audi says in their owner's manual. End rant...
If it makes you feel better my oil consumption went from a litre per 4000km to a litre per 800-1000 km within 20000km
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Old 12-13-2013, 12:55 PM   #4392
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I'm curious, I broke mine in hard and my niece broke hers in very easy, and still drives it easy. Hers uses a little over time and had the light on once. I've never had my light on nor had any loss on dipstick. Are you guys driving them easy, or break them in easy? I just wonder if Subaru designed them with loose ring packs to maximize hp and lower friction to improve mpg. And to really seat them you need to run it hard. Idk, just something I wonder. I know lots of engine builders building boosted engines will install a loose ring pack, compared to a tighter ring pack on N/A motors. These do have a fair amount of compression, so that would seem to negate my theory about the loose ring packs as usually anything 9.5:1 and over you would usually have tighter packs. So I'm sure its prob a faulty oil ring, but mine runs harder than hers and I use no oil. Both purchased in April of this year. Not sure build dates off hand.
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Old 12-13-2013, 01:29 PM   #4393
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And to really seat them you need to run it hard. Idk, just something I wonder.
I've expressed the very same theory on this forum.
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Old 12-13-2013, 02:26 PM   #4394
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Yep, several people have made that observation. I'm thankful to a couple of my friends who near red-lined it during the first couple hundred miles, something I probably wouldn't have done.
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Old 12-13-2013, 02:29 PM   #4395
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Yep, several people have made that observation. I'm thankful to a couple of my friends who near red-lined it during the first couple hundred miles, something I probably wouldn't have done.
It was difficult to do, but I did it with 90 miles on the engine. Otherwise hardish driving but not exceeding 4k until 1600 miles for me.

I don't really see oil loss unless I'm driving it hard, then it is expected.
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Old 12-13-2013, 03:03 PM   #4396
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Originally Posted by G2Spfld View Post
I'm curious, I broke mine in hard and my niece broke hers in very easy, and still drives it easy. Hers uses a little over time and had the light on once. I've never had my light on nor had any loss on dipstick. Are you guys driving them easy, or break them in easy? I just wonder if Subaru designed them with loose ring packs to maximize hp and lower friction to improve mpg. And to really seat them you need to run it hard. Idk, just something I wonder. I know lots of engine builders building boosted engines will install a loose ring pack, compared to a tighter ring pack on N/A motors. These do have a fair amount of compression, so that would seem to negate my theory about the loose ring packs as usually anything 9.5:1 and over you would usually have tighter packs. So I'm sure its prob a faulty oil ring, but mine runs harder than hers and I use no oil. Both purchased in April of this year. Not sure build dates off hand.
i didn't drive my hard, but i did vary RPMs up to about 4500 max over the first 1000mi. but no flooring it, etc. i didn't baby it either...just tried to avoid constant speeds and give the engine a bunch of RPMs

i probably use up 1/4qt in about 4000-5000mi. i'm changing my oil again in a week or so with about 5200mi likely and that includes some mountain driving with some deceleration with the transmission. we'll see if its any worse or different with this round of oil.
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Old 12-13-2013, 04:17 PM   #4397
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Its been said mountain driving and engine braking increases consumption. I was only in mountains for a few days, but I didn't have issues. I had about 15K on the car at that point. I've only hit rev limiter and made the cvt shift up while in M mode without my help ;-) one time. But I drove it well above 4500 rpm before 1200 miles. And after about 1500 I ran it pretty hard for a few weeks. Maybe 5500-6K on most shifts. I always broke mine in like I'll drive it, yet not abused it anymore than running it up under load. I figured if it implodes it wasn't built very well anyway. I have to say, I cannot complain about that car doing anything other than what it was designed to do. So for that, maybe I'm lucky but I'm very happy with the purchase(s).
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Old 12-13-2013, 05:57 PM   #4398
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I don't think break in has a lot to do with oil consumption. Definitely more to do with the manufacturing tolerances of the earlier models.

I broke mine in really easy and don't have much consumption (knock on wood)
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Old 12-13-2013, 06:28 PM   #4399
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Originally Posted by Xafen View Post
Yep, several people have made that observation. I'm thankful to a couple of my friends who near red-lined it during the first couple hundred miles, something I probably wouldn't have done.
Well, I wouldn't do that either. For the first 1k miles on my car, I would commonly rev it up to 4k RPM at 80% throttle (after the engine had warmed up), but I avoided higher RPMs than that, and I didn't floor it. And I did downshifts that wouldn't exceed 4k RPM when letting the clutch out.

That was my break-in process. It's more aggressive than "babying it", but it's not overly harsh either. My 2012 consumes approximately 0.5 quarts in 6k miles.
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Old 12-13-2013, 07:17 PM   #4400
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Well, I wouldn't do that either. For the first 1k miles on my car, I would commonly rev it up to 4k RPM at 80% throttle (after the engine had warmed up), but I avoided higher RPMs than that, and I didn't floor it. And I did downshifts that wouldn't exceed 4k RPM when letting the clutch out.

That was my break-in process. It's more aggressive than "babying it", but it's not overly harsh either. My 2012 consumes approximately 0.5 quarts in 6k miles.
I did the exact same break in process and am losing about a half quart as well between changes.
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