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Old 11-05-2013, 08:56 PM   #4276
Chris793
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Quote:
Originally Posted by nels0300 View Post
How does your dealer know your car has updated rings despite your car being built before 3/13? It doesn't make sense that some would have updated rings and some don't. If they updated the design because there was something wrong with it, why would Subaru continue to use the inferior rings on some Impreza but not all?

I think you're right, your dealer is full of **** and wanted you off the phone.
They asked for the last 8 digits of my vin number. When they ran the vin they said there was a "certain range" of 2013's that were not affected and had the updated rings. I asked how they were certain of that, they said "because thats what my computer says, yours is not affected". I might call another local dealer and see what they have to say about it.

It seems like people either consume a lot (1qt in 2000 miles of less), or little to none at all. My car is a 2013 CVT, so based on the small amount of info we have on here, it shouldn't be as prone as say a 2012 manual, although there are 2012 manuals that consume nothing.

I am keeping a watchful eye on this OCI to see if consumption is slowly increasing. To me, 1qt in 7500mi is my personal limit for "acceptable" oil consumption in a brand new vehicle, with less than 100,000mi on it.
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Old 11-05-2013, 10:06 PM   #4277
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Originally Posted by Chris793 View Post
They asked for the last 8 digits of my vin number. When they ran the vin they said there was a "certain range" of 2013's that were not affected and had the updated rings. I asked how they were certain of that, they said "because thats what my computer says, yours is not affected". I might call another local dealer and see what they have to say about it.

It seems like people either consume a lot (1qt in 2000 miles of less), or little to none at all. My car is a 2013 CVT, so based on the small amount of info we have on here, it shouldn't be as prone as say a 2012 manual, although there are 2012 manuals that consume nothing.

I am keeping a watchful eye on this OCI to see if consumption is slowly increasing. To me, 1qt in 7500mi is my personal limit for "acceptable" oil consumption in a brand new vehicle, with less than 100,000mi on it.
Mine was also built 7/12 and uses oil. To me, the idea that a "limited" number have these faulty rings makes no sense. I would think that ALL 2012+ NA Imprezas have the bad rings until they updated them in March 13.
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Old 11-05-2013, 10:56 PM   #4278
Commander Keen
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Mine has been burning a quart in 3500mi at worst and one in 6000mi at best.

I'm not concerned about it, just offering another data point.

Subaru should be made to re-test for fuel economy with the new rings, but it seems unlikely.
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Old 11-11-2013, 07:14 PM   #4279
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Update:

2800 miles after getting my car back with a new short block and heads, my low oil light has come on.

After stopping at a gas station and checking the oil level, it appears as though my engine has consumed about 1 and a half quarts of oil. The level is just about half way between the low and full dots on the dipstick, but the engine was originally overfilled by approx 1 quart.

This amount of consumption isn't as bad as before I got the new short block / heads, but its still well beyond acceptable in my eyes.

If this rate of consumption stays the same or happens to get worse, I'll do what ever it takes to get out of this junker. I also won't be giving subaru any more chances.
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Old 11-11-2013, 07:41 PM   #4280
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"what ever it takes"... to avoid spending $5 every 3K miles? I guess I'll never understand it.
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Old 11-11-2013, 08:25 PM   #4281
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Originally Posted by Commander Keen View Post
"what ever it takes"... to avoid spending $5 every 3K miles? I guess I'll never understand it.
The price of the oil and the inconvenience of having to top it off frequently isn't really the main issue. When they tore apart my engine, it was a worn out mess in only 30000 miles! The issues with the engine that are causing the excessive oil consumption is the real problem!
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Old 11-11-2013, 08:26 PM   #4282
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"what ever it takes"... to avoid spending $5 every 3K miles? I guess I'll never understand it.
3/12 build date no oil consumption keep an eye out
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Old 11-11-2013, 08:52 PM   #4283
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I'm honestly beginning to think that the engine in these cars just can't handle the type of repeat short trip driving that I do. I'm not saying that that type of driving style wouldn't be strenuous on any engine, but the tech that tore my engine apart at 30,000 miles, said it had the wear of an engine that had well over 200,000 miles on it!

Last edited by jr0bb5; 11-11-2013 at 09:01 PM.
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Old 11-11-2013, 09:15 PM   #4284
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How short of a trip on average? Any highway time? What was your oil change interval?

I'm having a hard time imagining that kind of damage at 30K. Mine recently passed that mark and is good as new as far as I can tell.
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Old 11-11-2013, 10:47 PM   #4285
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Quote:
Originally Posted by Commander Keen View Post
How short of a trip on average? Any highway time? What was your oil change interval?

I'm having a hard time imagining that kind of damage at 30K. Mine recently passed that mark and is good as new as far as I can tell.
To give you an idea of the type of driving I do, I am a delivery driver for a very busy restaurant. I work 6 days a week, 8-10 hour days. My car sees many short trips and a lot if idling almost every day. Almost constant short trip driving some days. Usually anywhere from 1 to 10 mile trips at a time. Also a lot of shifting, variable speeds and engine braking. The only good thing is the engine almost never completely cools off between trips. I suppose you could consider it sever driving. My car barely ever sees highway. Maybe once a month for a handful of miles.
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Old 11-11-2013, 11:46 PM   #4286
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Quote:
Originally Posted by jr0bb5 View Post

To give you an idea of the type of driving I do, I am a delivery driver for a very busy restaurant. I work 6 days a week, 8-10 hour days. My car sees many short trips and a lot if idling almost every day. Almost constant short trip driving some days. Usually anywhere from 1 to 10 mile trips at a time. Also a lot of shifting, variable speeds and engine braking. The only good thing is the engine almost never completely cools off between trips. I suppose you could consider it sever driving. My car barely ever sees highway. Maybe once a month for a handful of miles.
That sounds like the perfect recipe for burning extra oil, as well as using the severe service maintenance schedule
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Old 11-12-2013, 12:08 AM   #4287
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Definitely severe driving, but it shouldn't be a problem on short oil change intervals. It would be worse if the engine never fully warmed up.

Which parts of the engine showed wear? Were they measuring clearances or just eyeballing it?
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Old 11-12-2013, 04:25 AM   #4288
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I'm not sure if they measured clearences beforehand, but the tech told and showed me that the valve guides were very worn and had a ton of play. Also, he said that the cylinder walls were worn along with the piston rings. This is why they replaced the short block and heads.

I have been following a 5k mile oil change interval, but I may change that to 3k or 3.5k now. I meant to have an oil analysis done at one of the 5k intervals, but haven't gotten around to it yet. My car is due in 200 miles for its first oil change since the repairs.
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Old 11-12-2013, 04:29 AM   #4289
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Quote:
Originally Posted by flyboy1100 View Post

That sounds like the perfect recipe for burning extra oil, as well as using the severe service maintenance schedule
Yeah, I pretty much expect to burn some oil with that type of driving, but I still feel that the amount that I'm experiencing is excessive. My last car never consumed nearly as much oil with the same driving and its engine have well over 100k miles on it.
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Old 11-12-2013, 07:01 AM   #4290
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You should try a 3500 interval.

Chances are there was extra wear because you extended to 5k w/o confirming the could actually handle it in your situation.

I plan to run extended oci once warranty is up, but 70% off my driving is interstate between 70-80mph. The rest is pretty gentle in town driving. Amsoil xl should be able to get me 10k, and signature 12-15k, having already proved signature was in no danger of being out of spec after 8200 miles iirc
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Old 11-12-2013, 12:22 PM   #4291
Commander Keen
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The valve guides might have been the cause of the oil consumption, especially if you had one or more faulty stem seals.

What could have produced that kind of guide wear in the first place besides a lack of oil?

I'll stick with TC-W3 for that reason even if it does nothing else.

I'd love to know the exact stem to guide clearances if you can get them.
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Old 11-16-2013, 03:50 AM   #4292
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So!

Mine's a lease, and my dealer is marginalizing my consumption claim.

So I have taken matters into my own hands. I am trying 0w30 gc to see if consumption is reduced. After losing nothing in 13k km, I lost over 2 liters in 5k km.

hoping the thicker at operating temp oil wil reduce that.

5k will take me about 6 months to get through, so I'll report back in a few and see where I stand. 5 - 1l bottles in (~5.3 quarts for you american folk). Wish me luck!
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Old 11-16-2013, 05:26 PM   #4293
Commander Keen
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That's about a quart in 1470 miles, so you're right on the edge.

You have a way out at least, but ultimately, it's the dealer's car.

See if you can log the consumption problem to the vehicle's Carfax report. The dealer may be more inclined to cooperate at that point.
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Old 11-16-2013, 06:10 PM   #4294
jr0bb5
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Quote:
Originally Posted by FunkMasta View Post
So!

Mine's a lease, and my dealer is marginalizing my consumption claim.

So I have taken matters into my own hands. I am trying 0w30 gc to see if consumption is reduced. After losing nothing in 13k km, I lost over 2 liters in 5k km.

hoping the thicker at operating temp oil wil reduce that.

5k will take me about 6 months to get through, so I'll report back in a few and see where I stand. 5 - 1l bottles in (~5.3 quarts for you american folk). Wish me luck!
Good luck with trying a thicker oil, but if you look back in this thread, you'll see that a handful of us have tried different weight oils with absolutely no improvements.
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Old 11-16-2013, 08:03 PM   #4295
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Quote:
Originally Posted by FunkMasta View Post
So! Mine's a lease, and my dealer is marginalizing my consumption claim. So I have taken matters into my own hands. I am trying 0w30 gc to see if consumption is reduced. After losing nothing in 13k km, I lost over 2 liters in 5k km. hoping the thicker at operating temp oil wil reduce that. 5k will take me about 6 months to get through, so I'll report back in a few and see where I stand. 5 - 1l bottles in (~5.3 quarts for you american folk). Wish me luck!
You do realize that 0w30 is just as "thin" as 0w20 at operating temp right?? 0=0....just saying!
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Old 11-16-2013, 08:09 PM   #4296
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20 and 30 are hot ratings.
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Old 11-16-2013, 08:43 PM   #4297
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Originally Posted by Commander Keen View Post
20 and 30 are hot ratings.
I don't think so....ok so when it's cold it's a thin 0 weight but when it gets hot then oil defies science by getting thicker?? Come on man, think about it...change your oil in the dead of winter and then do it in summer after the engine is warm and tell me when it's thicker.
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Old 11-16-2013, 08:52 PM   #4298
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These aren't absolute viscosity ratings, for that you'd want the cSt.

A given weight oil follows a viscosity vs temperature curve. 0 weight has one curve and 30 weight has another.

0w30 means the oil behaves like a 0 weight when cold, and like a 30 weight when hot. It doesn't mean the oil thickens as it warms up. It thins, just not as much as a straight 0 weight would.
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Old 11-16-2013, 08:54 PM   #4299
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Originally Posted by Commander Keen View Post
These aren't absolute viscosity ratings, for that you'd want the cSt. A given weight oil follows a viscosity vs temperature curve. 0 weight has one curve and 30 weight has another. 0w30 means the oil behaves like a 0 weight when cold, and like a 30 weight when hot. It doesn't mean the oil thickens as it warms up. It thins, just not as much as a straight 0 weight would.
I stand corrected! You are right sir, and I apologize. Just read it myself to confirm and low and behold I was wrong in my way of thinking.
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Old 11-16-2013, 09:16 PM   #4300
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Originally Posted by Commander Keen View Post
These aren't absolute viscosity ratings, for that you'd want the cSt.

A given weight oil follows a viscosity vs temperature curve. 0 weight has one curve and 30 weight has another.

0w30 means the oil behaves like a 0 weight when cold, and like a 30 weight when hot. It doesn't mean the oil thickens as it warms up. It thins, just not as much as a straight 0 weight would.
although 0w-30 is nearly a 40wt oil, unlike 5w-30 which breaks down to a 20wt very quickly
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