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Old 02-20-2012, 09:19 PM   #61 (permalink)
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Boxer engines are just tough on oil. look at Porsche, they have their own criteria on oil-Porsche A40 specification. The new CAFE requirements for emissions and improved fuel economy are forcing Subaru to go with oils that are "good enough" just as long as you keep checking your oil at every fill-up.
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Old 03-29-2012, 08:05 AM   #62 (permalink)
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I tend to respectfully disagree with the "boxer engines are tough on oil" thing.

I have two other boxer 6 engines that basically don't burn any oil at all. Both are OLDER boxers, so maybe there's a difference, but if anything you'd think Subaru would have improved leak issues with each generation of engine... then again...

My ER27, 2.7 liter six developed leaks over time, but it's a 23 year old car so that WILL happen eventually. With the leaks sealed it's perfectly fine, and even when it was leaking it didn't use too much oil (half liter/quart a month maybe).

My EG33, 3.3 liter six doesn't burn oil at all, but I've only had the car for a year. The car does have OTHER leaks (power steering, brake fluid , etc.,) most likely due to it's being in an accident before I owned it, but the oil is fine.

Now - I HAVE noticed my wife's '06 EZ30, 3.0 liter six does seem to burn oil. This has always troubled me. I'm very new to this forum so I'm just now learning that this is "normal" for Tribecas apparently. So I'll have to keep my eye on it.

Bottom line: from my own personal experience, I think ANY older engine could burn/use a lot of oil, but I don't think boxer engines are any more prone to it than any other configuration of cylinders. NEWER boxer engines, however, might be more prone for some reason.
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Last edited by austin; 03-29-2012 at 08:08 AM.
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Old 05-01-2012, 08:05 PM   #63 (permalink)
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Just personal expirience with 2008 (3.6) Valvoline ss- burn ; Castrol ss- not burning oil a t all. My choice - Castrol
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Old 05-02-2012, 06:16 AM   #64 (permalink)
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I see less burn with the 0w30 Castrol German Formula but it still does.
This is the first oil change with the German castrol.
I will try this one more time on next oil change WITH 0W30.

Wonder if the 5w30 full synthetic nongerman formula is the same IK99?

5w30 CASROL FULL SYNTHETIC IS LESS EXPENSIVE is why I am asking due to it being in 5 quart jugs.
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Old 05-02-2012, 08:16 PM   #65 (permalink)
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Not sure if it German or not I’m getting it from Wal-Mart in 5 quart jugs for my 2 Triba's I taking 3 jugs (5 quart each).
5w-30 SS Castrol around 17$ for 5 quart jug in Wal-Mart last time 3.0 not burning ; 3.6 not burning at all. ( After was using Valvoline ss 5w-30 - burn only 3.6)
Where did you get yours "German" ?
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Old 05-03-2012, 06:15 AM   #66 (permalink)
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I GOT IT AT AUTOZONE per quart at 9 dollars a quart, 63 bucks for oil only and that's steep for 7 quarts. IT says mae in GERMANY in the back!
I GET MY TRUCKS 5W20 MOBIL 1 AT WALMART and that TOYOTA DOES NOT BURN AT ALL. I heard that Tribeca Burns the mobil one at this forum.
Are you using the semi-synthetic or full on the CASTROL?
THE FULL IS LIKE 26 A 5 QUART JUG AT WMART WHICH is great.

Quote:
Originally Posted by IK99
Not sure if it German or not I’m getting it from Wal-Mart in 5 quart jugs for my 2 Triba's I taking 3 jugs (5 quart each).
5w-30 SS Castrol around 17$ for 5 quart jug in Wal-Mart last time 3.0 not burning ; 3.6 not burning at all. ( After was using Valvoline ss 5w-30 - burn only 3.6)
Where did you get yours "German" ?
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Old 05-17-2012, 05:45 AM   #67 (permalink)
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I'm using semi synthetic.
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Old 05-17-2012, 06:15 AM   #68 (permalink)
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Not bad cause with full synthetic I am down about 1/2-3/4 a quart in 3,500 miles with the Castrol 0w30 and at 32,000 miles.
I read on the Legacy review review with the 3.6 for 40,000 miles they had to be topping it off and was a total of 8 quarts of TOPPING OFF.

I will go with 0w30 one more time and if not better will go with 5w30 syn from wall mart being less expensive.

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I'm using semi synthetic.
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Old 05-22-2012, 07:51 PM   #69 (permalink)
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Default My oil burn experience

I've been monitoring this thread for a while. And figured I'd update all with my experience.

I have a 08 tribeca with 47k on it. Fortunately I am still in powertrain warranty.

It all started last summer when I got an oil chg at a quicky lube place. The girl told me my dipstick was bone dry. Like many others I was in disbelief. A modern car shouldn't burn oil. I wrote it off as a fluke. Early this year on a long roadtrip I checked the dipstick and noticed the same. I was bone dry. Time to get to the dealer and file a case before my warranty is up.

Fast forward to now- I've been to the dealer 3 times and they confirm that I have been burning 1.5qt per 1000m. They did a compression test and the number on all cylinders were low. Leak down test was good. SOA is currently reviewing the results and hopefully they are going to approve a new short block.

Now my concern is whether the repair they give me ultimately fixes this issue, or is there a underlying design issue with these 3.6 engines that has never been resolved. I'm curious if the newer MY 3.6 motors have less issues than the 1st year 08s.

My friend who also bought an 08 at the same effect time as me recently noticed the same issue. He was experiencing occasional power surges. When he brought it to the dealer they said he was low on oil- he's out of warranty though. And my salesperson at the dealership also told me he had a outback 3,6 customer who was seeing very similar issues. Which all makes me wonder.

Anyway we'll see what subaru says if they tear down my engine.
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Old 05-23-2012, 06:19 AM   #70 (permalink)
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I did oil consumption 3 times and oil not 1.5 per 1000 so off I went.
I believe these motors burn or there is a defect in motor.

Check the 2010 Legacy with the 3.6 review on line and see these motors lose/burn oil. I think it was CAR AND DRIVER REVIEW.

In today's high engineered motors these engines should not burn with such low miles unless turbo is involved.

Last edited by LORE BECA; 05-23-2012 at 06:50 AM.
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Old 06-23-2012, 04:27 AM   #71 (permalink)
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Default short block replaced

So after 3 oil consumption tests that confirmed my engine was burning 1.5qts, i got my short block replaced by Subaru. In fact I'll be picking it up today after a month in the shop.

A month ago I dropped off my car for its last oil consumption test. This time they performed a compression and leakdown test on the engine. The leakdown test was fine and passed with flying colors. On the otherhand, they claimed the compression results were low on all cylinders -in the 140 to 150 range.

2 weeks later Subaru approved the short block replacement. You need all your oil change receipts - so always save those. My dealer was great to work with the whole way, they keep me in the loop the during the entire process and never covered anything up.

They did have a few issues putting the engine back together which has delayed me for 2 weeks. Upon the first reassembly, they discovered a coolant leak that was caused by a bad weld on a pipe. Engine came out, part was ordered and it was replaced.

On the next checkout they noticed some "tapping" coming from the 6th cylinder, at first they thought it was a timing chain guide issue. It turned out to be in the cylinder head, oil wasn't getting to one of the lifters. Engine had to come out again and it was addressed.

Dealer called yesterday and said I should be all set. We'll see how it all goes. I guess I'll be breaking her in hard this time - to make sure I seal those rings as best as I can.

I'll pull the dipstick in 1,000 miles and see if I continue to burn at the same rate. Hopefully the consumption issue is all a distant memory. Other than this issue the car has been great. One of the most reliable cars I have ever had. My original block is going back to SoA for analysis. We'll never know what the underlying issue was.

BTW, if anyone else has to go through this process, make sure you work with a dealer that knows what they are doing. At first I worked with a dealership that was closer to me. I knew this would be a multi visit process and wanted to stay as local as possible. Turns out they had no idea of the engine replacement process and pushed me down the engine flush route (at my cost). They also seemed quite shady. My complementary check indicated that all the fluids needed replacement when they were just changed not long ago. I quickly told them to get my car off the lift and left.
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Old 06-23-2012, 07:49 AM   #72 (permalink)
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Sorry to hear about all the trouble you had to go through. I believe there is an issue with this 3.6 motor and oil consumption. I would be down 1 quart in 2500 miles on conventional oil and oil consumption x3 times they would add a little. The so called standard of one quart in 1000 miles is ridiculous. You would never need an oil change in that case.
Don't be surprised if you still see oil consumption as I have a quart down in 5000 miles on last oil change using 0w30 Castrol full synthetic. If that is the case and not as bad as before just add oil if as bad as before think of dumping vehicle or talk buy back with dealer.
You don't want to go through this twice, after reading your story I would not go through this once.
Hope no issues for you, you've earned that for sure!!!!!!!

Last edited by LORE BECA; 06-23-2012 at 07:53 AM.
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Old 06-23-2012, 08:01 AM   #73 (permalink)
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Got the car back, and it runs just as it did when new. The dealer did a great job to make sure that i didn't have any issues. They also changed out a bunch of tensioners and other pieces while they had the engine out, gratis, so I should be set for sometime.

they told me i got a brand new engine that is 2012, not a rebuilt one. And even though it is still a 3.6, certain items have been redesigned in the 4 years since it's been released.

We'll see how i do in the next 1,000 miles. On the way back, I gave the car a couple of full throttle pulls on a few on ramps to make sure the rings seal properly this time around.

If i still have issues with some minor consumption, I switch from dino oil to synthetic after 10k.
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Old 06-25-2012, 07:48 AM   #74 (permalink)
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Good idea on wide open throttle and variable speeds for next 1000.
We babied ours and consumption still present.
Stay with dyno for first 10,000 for sure and tell us if consumption is gone.
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Old 07-13-2012, 01:16 PM   #75 (permalink)
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Default Oil Consumption

I've got an 08 Tribeca 3.6. Seems to be consuming oil. Not happy at all. Never had a car consume oil. If I had looked at this forum I wouldn't have purchased back in March. Already had to replace timing chain cover and front crank seal. This is my 3rd Subaru and possibly my last. I was considering being a loyal customer for some time to come but this has begun to sway me. My first Subaru was an 03 Outback 3.0 with little trouble. Next was an 09 Outback 2.5.....had to replace head gaskets and the normal 100k drive belt. It tends to stutter at stops. Been using Amsoil 5w30 Synthetic in the Tribeca but that's going to be too expensive considering I need to put oil in every 1000 miles. I'm considering going to the Castrol suggestion. Anything I need to look for? No leaks....the oil just disappears.
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Old 07-14-2012, 05:54 AM   #76 (permalink)
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Go to dealer and do oil consumption to see if over SO CALLED NORMAL SPEC.

Quote:
Originally Posted by dans3rdsub
I've got an 08 Tribeca 3.6. Seems to be consuming oil. Not happy at all. Never had a car consume oil. If I had looked at this forum I wouldn't have purchased back in March. Already had to replace timing chain cover and front crank seal. This is my 3rd Subaru and possibly my last. I was considering being a loyal customer for some time to come but this has begun to sway me. My first Subaru was an 03 Outback 3.0 with little trouble. Next was an 09 Outback 2.5.....had to replace head gaskets and the normal 100k drive belt. It tends to stutter at stops. Been using Amsoil 5w30 Synthetic in the Tribeca but that's going to be too expensive considering I need to put oil in every 1000 miles. I'm considering going to the Castrol suggestion. Anything I need to look for? No leaks....the oil just disappears.
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Old 10-10-2018, 03:43 PM   #77 (permalink)
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Default Mobil vs Castrol

So I bought my car with 68,000 and changed the oil first with Mobil 1 high mileage full synthetic, the most expensive one. The oil held up great in color and I kept it for about 8,000 miles and burned about 1.5 quarts. I didnt know these engines burned oil so when I checked it at 8k miles my dipstick was bone dry, had to add 1.5 quarts to get it back up and get the oil changed. The last oil change was Castrol full synthetic high mileage and in 5,000 miles it has burned about 1.5 quarts. The Castrol is noticeable darker for the same amount of mileage, and I bought it at Autozone so I'm not sure if it was German or not. Both times I used the Mobil 1 filter, about $16. For the next oil change Ill use the Penzoil Ultra Platinum 5w30 and a Purolator Boss filter but at this point it should only be synthetic in the engine.
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