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Old 09-03-2013, 02:38 PM   #4026
sgoldste01
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Originally Posted by jr0bb5 View Post
So I got to get a look at my torn-apart engine today while I was at the dealership getting the oil changed on the loaner car. The amount of carbon build up was rediculous! The tech assigned to fixing my car said he's never seen anything like it before on an engine with only 30k miles. He told me it looked like an engine that would have about 200k miles on it that constantly burned bad gas. Still waiting for one of the heads to come in from back order so they can reassemble and get it back to me. Eight weeks now and counting...

Oh yeah, the tech also told me that Subaru has 'unofficially' admitted the problem to inner circles and has quietly implemented a fix at some point. Also, the majority of all the oil consumption problems occur in cars with the 5MT for some reason.
Interesting. Where was this carbon accumulating?
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Old 09-03-2013, 02:40 PM   #4027
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Hmmm
I noticed on XV Forum that several owners are having oil consumption problems. Trouble in paradise!!
So far mine is doing AWESOME, and my oil level has stayed right where its supposed to.
Im not surprised your engine was dirty inside. Burning oil is sure to do that!
What are your plans now? Keep the car? Sucks you have been without it so much! Hope you enjoy the loaner.
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Old 09-03-2013, 02:46 PM   #4028
79letour
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I watched a youtube vid on Subaru. It showed Fb engines being made. The funky connecting rods are there because they have robots to do that portion of assembly. I work with robots in manufacturing, they work really well, but when they screw up, it can be disastrous. They may have finally done some tweaking on the assembly line. Or maybe they had bad rings from their supplier.
Maybe one day someone at soa will tell us what makes some fb/fa engines chug the crude stuff.
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Old 09-03-2013, 02:46 PM   #4029
jr0bb5
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Originally Posted by sgoldste01 View Post
Interesting. Where was this carbon accumulating?
All on the piston heads, valves and combustion chamber. He was scraping big chunks off with his finger nails. I should of taken pictures with my phone. The funny thing is I always use the best premium gas that I can find and use a bottle of Seafoam every 5k miles or so in the gas tank.
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Old 09-03-2013, 02:52 PM   #4030
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Oooh, I dont know if Seafoam is good. I use it in almost everything, but I could swear that somewhere it said not to use any of the cleaning products on these engines.
Maybe I'm wrong, idk. Wouldnt be the first time.
Anyhow- I wouldnt tell subaru that until I checked.
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Old 09-03-2013, 02:52 PM   #4031
jr0bb5
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Originally Posted by 79letour View Post
Hmmm
I noticed on XV Forum that several owners are having oil consumption problems. Trouble in paradise!!
So far mine is doing AWESOME, and my oil level has stayed right where its supposed to.
Im not surprised your engine was dirty inside. Burning oil is sure to do that!
What are your plans now? Keep the car? Sucks you have been without it so much! Hope you enjoy the loaner.
Not sure what my plans are yet. Just want the car back first then I'll make a decision. If it runs well and I don't have any further related issues, I may just hold on to it for a couple more years.

BTW, glad you XV isn't having any oil consumption issues. Hopefully it stays that way.
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Old 09-03-2013, 02:56 PM   #4032
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Originally Posted by 79letour View Post
Oooh, I dont know if Seafoam is good. I use it in almost everything, but I could swear that somewhere it said not to use any of the cleaning products on these engines.
Maybe I'm wrong, idk. Wouldnt be the first time.
Anyhow- I wouldnt tell subaru that until I checked.
Yeah, I don't use it in the crankcase, just as a fuel system cleaner/conditioner. Have always used it in my vehicles to clean the fuel system, intake manifolds, etc.
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Old 09-03-2013, 02:58 PM   #4033
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Yes! Thank you. Its so much better when the car works as expected. Now I can have fun making it "mine". So far the mantra has been "black it all out". Kinda like if Darth Vader drove an XV.
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Old 09-03-2013, 03:00 PM   #4034
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Originally Posted by jr0bb5 View Post
Yeah, I don't use it in the crankcase, just as a fuel system cleaner/conditioner. Have always used it in my vehicles to clean the fuel system, intake manifolds, etc.
Seafoam definitely is good stuff. Keeps the four carbs on my modded ZRX 1200 nice and clean. man getting those carbs in and out is a PITA!
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Old 09-03-2013, 03:56 PM   #4035
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Quote:
Originally Posted by jr0bb5 View Post
So I got to get a look at my torn-apart engine today while I was at the dealership getting the oil changed on the loaner car. The amount of carbon build up was rediculous! The tech assigned to fixing my car said he's never seen anything like it before on an engine with only 30k miles. He told me it looked like an engine that would have about 200k miles on it that constantly burned bad gas. Still waiting for one of the heads to come in from back order so they can reassemble and get it back to me. Eight weeks now and counting...

Oh yeah, the tech also told me that Subaru has 'unofficially' admitted the problem to inner circles and has quietly implemented a fix at some point. Also, the majority of all the oil consumption problems occur in cars with the 5MT for some reason.
If they have "unofficially" admitted to the problem, did he lead onto what the cause of the oil burning issues are?
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Old 09-03-2013, 04:08 PM   #4036
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Hey Chris793, what part of the southeast are ya from??
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Old 09-03-2013, 04:15 PM   #4037
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Originally Posted by jr0bb5 View Post
Oh yeah, the tech also told me that Subaru has 'unofficially' admitted the problem to inner circles and has quietly implemented a fix at some point. Also, the majority of all the oil consumption problems occur in cars with the 5MT for some reason.
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Originally Posted by ST Eye View Post
I just spoke to my good friend that is the head technician at a dealership. He said that he has seen a few cases of consumption issues with some of the new Imprezas. Specifically he has seen them in manual transmission cars. For those that have issues, do you have 5-speed or CVT?
HA! Like I said last year!
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Old 09-03-2013, 04:20 PM   #4038
jr0bb5
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If they have "unofficially" admitted to the problem, did he lead onto what the cause of the oil burning issues are?
Well, the cause of my consumption problem was worn cylinders and valve guides. He didn't know what the ultimate cause of that was tho.

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HA! Like I said last year!

That's funny. I actually remember that post of yours.
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Old 09-03-2013, 04:27 PM   #4039
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Quote:
Originally Posted by jr0bb5 View Post
So I got to get a look at my torn-apart engine today while I was at the dealership getting the oil changed on the loaner car. The amount of carbon build up was rediculous! The tech assigned to fixing my car said he's never seen anything like it before on an engine with only 30k miles. He told me it looked like an engine that would have about 200k miles on it that constantly burned bad gas. Still waiting for one of the heads to come in from back order so they can reassemble and get it back to me. Eight weeks now and counting...

Oh yeah, the tech also told me that Subaru has 'unofficially' admitted the problem to inner circles and has quietly implemented a fix at some point. Also, the majority of all the oil consumption problems occur in cars with the 5MT for some reason.
What is the fix?
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Old 09-03-2013, 04:48 PM   #4040
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What is the fix?
He didn't know. He was just telling me what he heard from other sources about the situation.

Oh, just for the record, this is the second subaru technician to tell me that's the required 0W20 oil is BS. They both told me that if it was their car, they would be running 5W30.

Last edited by jr0bb5; 09-03-2013 at 05:01 PM.
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Old 09-03-2013, 05:09 PM   #4041
auskip07
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5mt are subject to more engine braking. My bet is on the pcv valve
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Old 09-03-2013, 05:26 PM   #4042
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5mt are subject to more engine braking. My bet is on the pcv valve
Yup! I Ann guessing it gets stuck open then the valves/Pistons "see"more oil, hence lots of carbon buildup.

I plan to pull my pcv at some point, but since adding oil on my most recent Roadtrip with a lot more engine braking than normal, I haven't seen any loss. As adv example there were times I went 5-10 minutes downhill using only engine braking to control speed.
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Old 09-03-2013, 05:39 PM   #4043
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For example. i was engine braking on the regular last oil cycle and i saw the light come on after 3k..... i stopped engine braking and the oil level and light never moved.
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Old 09-03-2013, 05:41 PM   #4044
Chris793
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Originally Posted by jr0bb5 View Post
He didn't know. He was just telling me what he heard from other sources about the situation.

Oh, just for the record, this is the second subaru technician to tell me that's the required 0W20 oil is BS. They both told me that if it was their car, they would be running 5W30.
That is interesting that he said he would be running 5w30. I thought from glancing through the hundreds of pages on this thread that those who have experimented with 5w20 and 5w30 saw the same consumption rates as the 0w20.
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Old 09-03-2013, 05:42 PM   #4045
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Hey Chris793, what part of the southeast are ya from??
Hotlanta
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Old 09-03-2013, 05:49 PM   #4046
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That is interesting that he said he would be running 5w30. I thought from glancing through the hundreds of pages on this thread that those who have experimented with 5w20 and 5w30 saw the same consumption rates as the 0w20.
take it with a grain of salt.
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Old 09-03-2013, 06:01 PM   #4047
79letour
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HA! Like I said last year!
C'mon dude, I thought you HATE when people quote themselves!
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Old 09-03-2013, 06:07 PM   #4048
79letour
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That is interesting that he said he would be running 5w30. I thought from glancing through the hundreds of pages on this thread that those who have experimented with 5w20 and 5w30 saw the same consumption rates as the 0w20.
If anything, mine burned the 5w30 faster.
I too was told by more than a couple techs and service personnel that 0w20 is BS. But bobistheoilguy certainly says that 0w20 is awesome stuff. If the oil were the problem then everyone would be pissed because their car would all be burning oil.
My car hasn't had any black residue on the ass end yet.
My friends 13' impreza- its swp, except for the burnt oil black on the rear of the car.
I'm not gonnae even tell her about the oil. Theres a nice amber light that will tell her if and when shes low.
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Old 09-03-2013, 06:10 PM   #4049
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Hotlanta
Oh, right on. I thought maybe you were local here, my first phone number started with 793. I love Atlanta, though. I used to spend summers up in Duluth, Alpharetta, Marietta, Tucker, and that whole upper atlanta area. I spent many a summer off of Jimmy Carter Blvd.
I like the girls up there!
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Old 09-03-2013, 06:20 PM   #4050
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Originally Posted by flyboy1100 View Post
Yup! I Ann guessing it gets stuck open then the valves/Pistons "see"more oil, hence lots of carbon buildup.

I plan to pull my pcv at some point, but since adding oil on my most recent Roadtrip with a lot more engine braking than normal, I haven't seen any loss. As adv example there were times I went 5-10 minutes downhill using only engine braking to control speed.
I definitely think you're correct that a pcv can cause excess oil burning.
But I think the majority of these oil-drinking subes have something internally wrong.
If one looks back through this long ass thread, there were cases when the owners had dealers replace pcv's. I think if it were *just* a pcv issue, then dealers would have figured that out by now.
My pcv was checked out on my 12.
I find it odd that the engines that were built more by human beings didn't develop such a reputation for oil consumption. when increased automation came in, and production went to maximum overdrive, suddenly more than a "couple unique individuals" have had oil consumption.
I hope that some of you are right, and that Fuji has fixed the problem. So far my XV seems to be absolutely great. I have a couple minor annoyances, but I just passed tue mileage that my 12 showed its first oil level light at.
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