Mobil 1 0w30 / 12,000miles gmc Terrain

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As tig stated, chevrofreak's opinions regarding Mobil 1 are just that.... opinions. He has no data to back them up.

Your UOA really does not help instil confidence in the GM OLM system. There is obviously an issue with their calibration for the DI engines and your "not so great" UOA is proof of that.

People fight about UAO's with single digit variance on this board and will call one "bad" over another because it has 2ppm higher iron, or 1ppm higher lead. No folks, THIS is a bad UOA.

Your course of action is sound: Call GM and see if their is a recalibration for your vehicle. If they say no, I'd cut the OCI in half, run a Dexos1 approved oil, as others have suggested and re-sample.

I'm sure the engine still breaking in isn't helping things here either.
 
Originally Posted By: OVERK1LL
Your UOA really does not help instil confidence in the GM OLM system. There is obviously an issue with their calibration for the DI engines and your "not so great" UOA is proof of that.

People fight about UAO's with single digit variance on this board and will call one "bad" over another because it has 2ppm higher iron, or 1ppm higher lead. No folks, THIS is a bad UOA.

Your course of action is sound: Call GM and see if their is a recalibration for your vehicle. If they say no, I'd cut the OCI in half, run a Dexos1 approved oil, as others have suggested and re-sample.

I'm sure the engine still breaking in isn't helping things here either.


I agree, this UOA proves nothing about the oil IMO. It has more to do with the issues associated with DI engines. GM needs to tweak the OLM for starters, a band-aid fix, then address the cause of the fuel dilution and correct it.
 
So much for brand x oil being okay for x miles OCI. I hope people will get that and stop with the blanket advice.
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Agree that here is a perfect example of a MFG that does not have it straight yet. The OLM needs to be fixed and no matter what oil is used in this engine shorter OCIs (esp in a new vehicle. I'm glad I change oil more freq in a new motor till 10k) NEED to be done.

And I'll not even start on DI motors.
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Bill
 
So i have always used Mobil 1 in all of my vehicles, and this is the first time that I have ever had an oil sample done. As I have been looking through posts on the board I did have another question. It seems that a lot of the UOA's that are using Mobil 1 show high IRON. Is this the case? If so is there a rational reason behind it from the company?
 
Originally Posted By: rshaw125
A modern engine that can't handle 10,000 miles oil changes on synthetic? I think it says more about the engine than the oil choice.


Gotta say, I agree with this. These DI engines are going to cause GM a lot of grief going down the road.

Technically, this oil still had TBN left, but massive fuel dilution left it unable to protect in any meaningful way. Even on an engine breaking in, 200+ for iron is excessive.
 
Originally Posted By: Dogger37
So i have always used Mobil 1 in all of my vehicles, and this is the first time that I have ever had an oil sample done. As I have been looking through posts on the board I did have another question. It seems that a lot of the UOA's that are using Mobil 1 show high IRON. Is this the case? If so is there a rational reason behind it from the company?


It is thought that it may just be chemical chelation. Redline shows this as well.
 
Originally Posted By: tig1
As for Chevrofreaks comment, he has no basis for it other than than opinion. M1 oils are widely used here by BITOGERs with outstanding results.


Originally Posted By: OVERK1LL
As tig stated, chevrofreak's opinions regarding Mobil 1 are just that.... opinions. He has no data to back them up.


I have plenty of evidence and basis for it. Not only was Mobil 1 5w-30 failing the Seq IVA tests, but my own personal use of it showed large amounts of ferrous particles trapped by my oil filter magnet. Pennzoil Platinum, which was run even longer, showed a small fraction of the amount of metal.
 
It's not the oil. It's break in wear and the fact that you ran it too long. Why did you change the oil at 2000? The motor can take 25,000 to wear in,so run shorter ocis when the motor is new. Personally,I prefer M1 EP to regular M1. Watch for Autozone sales. You can get 5 quarts of M1 EP and an M1 filter for $32-35. Can't beat that deal.
 
Originally Posted By: chevrofreak
Originally Posted By: tig1
As for Chevrofreaks comment, he has no basis for it other than than opinion. M1 oils are widely used here by BITOGERs with outstanding results.


Originally Posted By: OVERK1LL
As tig stated, chevrofreak's opinions regarding Mobil 1 are just that.... opinions. He has no data to back them up.


I have plenty of evidence and basis for it. Not only was Mobil 1 5w-30 failing the Seq IVA tests, but my own personal use of it showed large amounts of ferrous particles trapped by my oil filter magnet. Pennzoil Platinum, which was run even longer, showed a small fraction of the amount of metal.


The Seq IVA test failure is a red herring, since we have nothing other than the claims of their competition to support it. The API stated that Mobil 1 (and it was ONLY the 5w30 being questioned) passed the test.

Unless you have actual tear-down testing (which you don't) and components measured out to support your theory (which you don't) and ran multiple tests side-by-side operating under the same conditions with the only variable at play being the lubricant (which you haven't) then you don't have a leg to stand on.

Some guy on the Internet doing UOA's and some junk on a drain plug (which for all you know may have been cleaned out of some sludge or varnish pocket somewhere in the engine) doesn't support your theory and the fact you go off half-cocked about how bad it is EVERY time somebody mentions Mobil 1 on this site is getting quite old.

You don't have data. You hate Mobil 1. Good for you. Go write a letter and burn it. Throw a tantrum.

Or, if you are sure you are right, go do the bloody testing yourself and PROVE IT.

Until then, you are just spewing unfounded opinions as facts on this board.

Doug Hillary posted pictures and tear down data of engines run on Delvac 1 at 90,000Km intervals over 1.2 million Km in a FLEET of trucks that he ran for lubricant testing.

That, good sir, is REAL DATA. Your jaded opinion, is NOT.
 
Originally Posted By: Dogger37
So i have always used Mobil 1 in all of my vehicles, and this is the first time that I have ever had an oil sample done. As I have been looking through posts on the board I did have another question. It seems that a lot of the UOA's that are using Mobil 1 show high IRON. Is this the case? If so is there a rational reason behind it from the company?


As you can see, this becomes a hot topic for both Mobil1 deniers and fanboys alike. Since I'm neither, I'll give you my quick opinion: M1 oils tend to show slightly elevated iron levels in UOA's. They've never explained why, though people have speculated that it could be an artifact of the testing protocol, or that M1 is willing to trade a small increase in iron wear in exchange for other properties (like deposit control). Regardless, we're talking about levels which are insignificant, 10-20ppm.

That's not what you have going on. You have triple-digit FE numbers, and the first digit isn't a "1". As I said before, it's a single report on a new-ish engine. That said, if you see 2 more UOA's and it's not trending down based on a PPM per mile basis with a shorter OCI, *then* I'd start to be concerned--but about the engine, not the choice of lubricant.

Castrol's 0W30 probably would be a better choice for this engine since it does seem to be very shear-resistant in tough applications, in my experience--and it's a heavy 0W30 to start. That said, I'll agree with what others have said--use an approved oil. It'll make the warranty process easier, should you need it...and if the trend continues, there's the possibility that you may need it.
 
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Originally Posted By: JOD
You have double-digit FE numbers, and the first digit isn't a "1".


No sir, he has TRIPLE digit FE numbers and the first one isn't a "1"
crazy2.gif
 
Originally Posted By: OVERK1LL
Originally Posted By: JOD
You have double-digit FE numbers, and the first digit isn't a "1".


No sir, he has TRIPLE digit FE numbers and the first one isn't a "1"
crazy2.gif



Yep, that's what I meant to say!

All of the wrangling over M1's higher FE numbers involve 10-25ppm increases. This is obviously different...
 
I changed it at 2,000 miles because i thought it would help flush out the wear in metals, etc. I didn't realize that it can take multiple changes for the wear in particles to be completely flushed out.

I drive a lot for work ( 40,000+ miles a year ) so it wont take me long to get a pretty clear picture of what a DI engine will look like over 100,000 miles.
 
I wanted to give my .02 cents:

Definitely do shorter OCIs, perhaps 2-3 more from now, before extending out much again. Since the OP dropped his factory fill at 2,000 miles and then proceeded to go with one of the thinnest 0w-30 on the market for the mileage he did it could use some wash out of wear metals, IMO, as the break-in process gets over with.

I'd run a blend or synthetic for 3,500-4,000 for 2 OCI's(shortened interval) and then retest(get a UOA) on the 3rd OCI at no more than, say, 6,000 miles for comparison.

Personally, I'd like to see the OP try SynPower 5w-30. The SN version looked solid with a good NOACK%; amongst other things. Hopefully this equates to 'good enough' for the DI issues for a 'capped' interval in his app. As others have said, it is dexos1 'approved'.
 
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Whatever you run PLEASE make sure its one of the silly Dexos approved oils just in case you need to exercise the warranty.(which I think you will sadly)

Castrol GC is NOT approved and please don't give them ANY reason to hassle you.

Bill
 
Originally Posted By: JOD
Originally Posted By: OVERK1LL
Originally Posted By: JOD
You have double-digit FE numbers, and the first digit isn't a "1".


No sir, he has TRIPLE digit FE numbers and the first one isn't a "1"
crazy2.gif



Yep, that's what I meant to say!

All of the wrangling over M1's higher FE numbers involve 10-25ppm increases. This is obviously different...



Quite so
grin.gif


And I figured that's what you meant, which is why I quoted you
wink.gif
 
Readily available approved Dexos 1 oils are:

1. ACDelco dexos1™ SAE 5W-30
2. CAM2 dexos1 Full Synthetic 5W-30
3. Coastal
4. GulfTEC dexos1™ Synthetic 5W-30
5. Liqui Moly Top Tec 4601
6. Mobil 1 5W-30
7. Mobil 1 Extended Performance 5W-30
8. Peak Performance dexos™ 5W30
9. Pennzoil Platinum Full Synthetic
10. Petro-Canada Supreme Synthetic 5W-30
11. Quaker State Ultimate Durability Full Synthetic
 
Originally Posted By: OVERK1LL
Readily available approved Dexos 1 oils are:

1. ACDelco dexos1™ SAE 5W-30
2. CAM2 dexos1 Full Synthetic 5W-30
3. Coastal
4. GulfTEC dexos1™ Synthetic 5W-30
5. Liqui Moly Top Tec 4601
6. Mobil 1 5W-30
7. Mobil 1 Extended Performance 5W-30
8. Peak Performance dexos™ 5W30
9. Pennzoil Platinum Full Synthetic
10. Petro-Canada Supreme Synthetic 5W-30
11. Quaker State Ultimate Durability Full Synthetic


Pretty well anyone who wants to PAY for the "privilege" of selling the oil.

Complete list
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