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Old 02-14-2011, 03:06 PM   #1
Hellbox
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Default Mobil 1 5w30 Synthetic WRX

I'm burning about 1qt/3000mi on M1 5w30 sythentic. I know this isn't ideal, but I'm hoping other members are seeing similar burnoff with the same oil?

Any suggestions as to better oil with less burnoff without sacraficing protection?

Or is 1qt/3000mi enough reason to look into seals/gaskets?

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Old 02-14-2011, 04:50 PM   #2
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Quote:
Originally Posted by Hellbox View Post
Any suggestions as to better oil with less burnoff without sacraficing protection?
search around, about 2 bazillion comments about oil on here...

although I find it amusing that you are using m1-5w30 and worry about sacrificing protection. You probably have one of the worst oils known to man for a turbocharged subaru engine. on sale walmart store brand $.99/quart conventional oil is better.
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Old 02-14-2011, 04:56 PM   #3
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Originally Posted by rkramer View Post
search around, about 2 bazillion comments about oil on here...

although I find it amusing that you are using m1-5w30 and worry about sacrificing protection. You probably have one of the worst oils known to man for a turbocharged subaru engine. on sale walmart store brand $.99/quart conventional oil is better.
That's the information I'm looking for. I've sifted pretty thoroughly through the oil posts - Not entirelly too much directed at M1 5w30.

The Rex is new to me, and I only put in it what the previous ower had been using.

Any specific reason you feel M1 is so bad for the WRX? I've heard it breaks down and thins out quickly - similar to RP.
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Old 02-14-2011, 06:33 PM   #4
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Any Energy Conserving oil will thin out quickly, almost by design. Your consumption isn't that bad, and is well within Subaru's guidelines, but alternatives would be Mobil1 0W-40, any M1 High Mileage oil, Castrol Syntec 0W-30, or Rotella 5W-40. None of these oils are Energy Conserving GF4/GF5 oils.

Keep in mind that you may also experience consumption when switching oils.

-Dennis
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Old 02-14-2011, 06:36 PM   #5
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Quote:
Originally Posted by Hellbox View Post
That's the information I'm looking for. I've sifted pretty thoroughly through the oil posts - Not entirelly too much directed at M1 5w30.

The Rex is new to me, and I only put in it what the previous ower had been using.

Any specific reason you feel M1 is so bad for the WRX? I've heard it breaks down and thins out quickly - similar to RP.
From what I've come across, M1 5w30 loses it's viscosity extremely quickly. If I were you I'd change my oil within the next few days before a knock tells you that it's too late.
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Old 02-14-2011, 06:38 PM   #6
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Just out of curiousity, what causes the consumption when switching oils?

I understand that a thinner sythnetic may cause increased consumption - but going from M1 5w30 to Rotella T6, I could experience additional consumption?

If that's the case, how long would you stick with an oil before making a decision based on its performance? More than 3 oil changes?
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Old 02-14-2011, 10:04 PM   #7
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Quote:
Originally Posted by Hellbox View Post
Just out of curiousity, what causes the consumption when switching oils?

I understand that a thinner sythnetic may cause increased consumption - but going from M1 5w30 to Rotella T6, I could experience additional consumption?

If that's the case, how long would you stick with an oil before making a decision based on its performance? More than 3 oil changes?
It's just due to the different chemistry (base stocks, additives, etc.) between the different oils. More than likely, it depends what you're switching to or from. There probably won't be that much of a difference going from M1 to RT6. You usually have more consumption for the first 2-3 changes when switching to an oil made with ester base stocks or an oil that contains ester additives.

-Dennis
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Old 02-15-2011, 08:49 AM   #8
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Quote:
Originally Posted by Hellbox View Post
That's the information I'm looking for. I've sifted pretty thoroughly through the oil posts - Not entirelly too much directed at M1 5w30.

The Rex is new to me, and I only put in it what the previous ower had been using.

Any specific reason you feel M1 is so bad for the WRX? I've heard it breaks down and thins out quickly - similar to RP.
That is not information, that is an uninformed opinion. While it may have some basis, the rhetoric leads me to think there is not too much science behind the opinion. Seriously, about the worst known to man?

If you want a lot more info (and also a lot more opinion) hang out at Bob is the oil guy dot com. Bring a lunch, there are days worth of threads.

What you can sift through is *thousands* of oil analysis reports, and make your own more informed decision.

My own personal analysis: I have a cumulative 200+K miles on 2 turbo charged cars (one is an aftermarket FM Miata, other 2002 WRX), and another 140K on a B18C integra. M1 5/30, 10/30 and 0/30 has been used.

I have performed 20+ samples across them all (blackstone labs) to see how the engine was performing and the oil held up. All of my samples came back within spec, running as high as 7500 miles for OCI. This is across 16 years so the specs of the product have changed a tad with the new S ratings, etc...

You could do worse then M1. If you are changing every 3K with street use...you really could use most any brand as that is a pretty short OCI.

M1 is not the best (and best is subjective to application really). There are plenty of good products out there. I just have used it as it was a good brand at a fair price and relatively easy to get. German Castrol is very hard to find (and known for being one of the higher rated 30w out there, closer to a 40) for example.

Happy reading,

- b
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Old 02-15-2011, 11:45 AM   #9
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Thanks bvl.

Most of the reason I created this thread is to see if others are experiencing higher amounts of burnoff using M1. This is to give me peace of mind on whether or not I need to dig further into possibly checking seals/gaskets for a larger cause.

I don't see or smell any amount of blue smoke exiting the exhaust, and there's no dripping beneath the car.
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Old 02-15-2011, 02:10 PM   #10
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While I have had great success using Mobil-1 0w-20 in my 2001 Focus, I tried Mobil-1 5w-30 very early on in my WRX and I had oil consumption issues. I have of course since switched oils.

I currently use Schaeffer's "Supreme 9000 Full Synthetic" 5w-40 and have no consumption of this oil to report.

I had also been using for some time Shell's "Rotella T6 Full Synthetic" 5w-40 and had no consumption issues of this oil to report.

Try the T6 for a while and do an initial UOA (Universal Oil Analysis) with a TBN (Total Base Number) to see how well the oil is faring.

Last edited by Big-E; 08-22-2011 at 11:20 PM.
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Old 02-15-2011, 02:55 PM   #11
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^+1 on the consumption issue with M1, switched to Rotella Full syn 5w40, no consumption issues. The main opinion on here is that Rotella is one of better oils to run.
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Old 02-15-2011, 03:27 PM   #12
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Perfect, I really appreciate the responses.

I'll provide an update with my findings once I switch.
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Old 02-15-2011, 06:54 PM   #13
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Quote:
Originally Posted by bvl

That is not information, that is an uninformed opinion. While it may have some basis, the rhetoric leads me to think there is not too much science behind the opinion. Seriously, about the worst known to man?

If you want a lot more info (and also a lot more opinion) hang out at Bob is the oil guy dot com. Bring a lunch, there are days worth of threads.

What you can sift through is *thousands* of oil analysis reports, and make your own more informed decision.

My own personal analysis: I have a cumulative 200+K miles on 2 turbo charged cars (one is an aftermarket FM Miata, other 2002 WRX), and another 140K on a B18C integra. M1 5/30, 10/30 and 0/30 has been used.

I have performed 20+ samples across them all (blackstone labs) to see how the engine was performing and the oil held up. All of my samples came back within spec, running as high as 7500 miles for OCI. This is across 16 years so the specs of the product have changed a tad with the new S ratings, etc...

You could do worse then M1. If you are changing every 3K with street use...you really could use most any brand as that is a pretty short OCI.

M1 is not the best (and best is subjective to application really). There are plenty of good products out there. I just have used it as it was a good brand at a fair price and relatively easy to get. German Castrol is very hard to find (and known for being one of the higher rated 30w out there, closer to a 40) for example.

Happy reading,

- b
It's not uninformed opinion that "regular" M1 thins out quickly, but general knowledge based on some uoa's. In some cases, you may find that the oil still showed low wear despite shearing to a 20 grade. In other cases, wear increased.

I know that there are a few M1 5W-30 GF4 EC Subaru turbo uoa's on BITOG, but it may be challenging finding one ( the site's google search may work well). Like the enthusiasts here, the majority of enthusiasts there run the best bang for the buck robust oils like GC or RT6, or don't bother doing or posting uoa's. It would be interesting to see your data.

-Dennis

Last edited by bluesubie; 02-15-2011 at 07:13 PM.
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Old 08-22-2011, 11:07 PM   #14
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I keep reading how Mobil 1 "is not great for turbo boxer engines". Please explain to me how Mobil 1 is not a good choice?
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Old 08-22-2011, 11:37 PM   #15
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Quote:
Originally Posted by gurusan
I keep reading how Mobil 1 "is not great for turbo boxer engines". Please explain to me how Mobil 1 is not a good choice?
It's not that the entire brand is not a good choice, but most Energy Conserving 30 weights are not good for many applications. Most people look at the oil cap and think 5W-30 is ideal for any application, even when they're running mods.

A couple of years ago, XOM was taking a lot of heat by the other oil majors for some samples not passing wear tests and never specifically addressed it. http://www.imakenews.com/lng/e_artic...jVtMk,b1M25KBS

-Dennis
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Old 08-23-2011, 09:17 PM   #16
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You asked for:
Quote:
Originally Posted by Hellbox View Post
suggestions as to better oil with less burnoff without sacraficing protection?
See here:
http://forums.nasioc.com/forums/show....php?t=2230351
At the very bottom of the very last page of the pdf I linked to in the first post, there is Lubrizol testing of M1, RLI, and Quaker State 5W30s in terms of oxidation. While M1 was 3x as oxidatively stable as the Quaker State product (M1's oxidative stability is good), the RLI product was >19% more oxidatively stable than the M1.
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Old 11-19-2011, 11:14 AM   #17
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In my FM Turbocharged Miata, I used to use Mobil1 and did see it burn off quicker than when I swapped out for Redline oil. Then when I bought my first 02 WRX, i only used Redline oils. Then I bought a 04 STi and only used Redline. Purchased 07 2.5i and 2010 2.5i and 2011 OUTBACK 2.5i and ran Mobil1 oil with no issues. I recently purchased a 2011 WRX and will probably continue running MObil1 5w30 but most likely change the oil at 2500-3000 miles after the initial change. I am not worried about the oil. If it is changed on a regular basis and is kept full, there should be no issues.
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Old 11-19-2011, 11:58 AM   #18
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Originally Posted by wrxman02 View Post
In my FM Turbocharged Miata, I used to use Mobil1 and did see it burn off quicker than when I swapped out for Redline oil. Then when I bought my first 02 WRX, i only used Redline oils. Then I bought a 04 STi and only used Redline. Purchased 07 2.5i and 2010 2.5i and 2011 OUTBACK 2.5i and ran Mobil1 oil with no issues. I recently purchased a 2011 WRX and will probably continue running MObil1 5w30 but most likely change the oil at 2500-3000 miles after the initial change. I am not worried about the oil. If it is changed on a regular basis and is kept full, there should be no issues.
you must be an idiot....yeah, that's it
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Old 11-19-2011, 12:09 PM   #19
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omg









...
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Old 11-20-2011, 09:28 AM   #20
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I think what Uncle Scotty is trying to say is that n/a Subaru's can run on anything and you cannot compare that application to a turbocharged one.

-Dennis
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Old 11-20-2011, 05:41 PM   #21
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Quote:
Originally Posted by bluesubie View Post
I think what Uncle Scotty is trying to say is that n/a Subaru's can run on anything and you cannot compare that application to a turbocharged one.

-Dennis
well.....that's part of it, anyway
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Old 11-21-2011, 08:02 PM   #22
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If I've learned one thing from reading tons of oil posts on this site, its that popular opinion states that 30-weight oils SUCK in TURBO cars.

Seems like it's Uncle Scotty's life mission to make sure everyone learns this
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Old 11-22-2011, 12:28 AM   #23
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Quote:
Originally Posted by NcKidd View Post
If I've learned one thing from reading tons of oil posts on this site, its that popular opinion states that 30-weight oils SUCK in TURBO cars.

Seems like it's Uncle Scotty's life mission to make sure everyone learns this
the heart of a lot of my

is that I see nice cars getting all ****ed up by idiots doing stupid to REALLY stupid things to them....and they seem to think nothing of it

just like relationships....oh well...there's more out there(to **** up, once again)

children with A parent.......cars with an idiot owner

meh....
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