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[john 070]

at 1,333 miles driven.  At this rate, we would have to get rid of the Pennzoil Platinum at only 2,515 miles.  imho that's excessive and a waste of natural resources....but I don't think I'm gonna fool around.  I will document the mileage, what percentage was remaining, and date of change.

Just imagine, German mfgs. are endorsing 15k and 24 mos. on synthetic oil!  I know that the OLM is not designed with synthetic in mind, yet at the same time, 2,515 miles with dexos1 is a pure waste of natural resources....imho that is. 

[GoldEnclave]

I agree 100%! Is the OLM rate much faster than it had been in the past? If so, why do you think that happened during this drain interval?

[john 070]

I can only guess.....it's been just shy of 2 1/2 mos., and we've gone only 1,333, and maybe, it's been doing short trips?  Just a guess....that the algorithm has a time factor that's heavily weighted?

But Germans have doubled their interval.  It used to be one year regardless.  Then they doubled it to two years (seems odd but they did it).  they briefly said if you went 5,999 miles and it's been one year, you don't need to change it.  If you went 6,001 and it's been one year, you need to change it.  Customers said that makes no sense, change my oil (for free)!  and they retracted that policy.

If it were up to me, I would do 7,500 miles, or 1 year, on full synthetic.  But if the OLM says 2,515 = 0%, I will change it, and document...under protest! 

[JerseyDevil]

GM has a lot of confidence in their OLM algorithm but the one in the Enclave is probably calibrated for DINO oil. The one in my Cadillac which requires Mobil 1 will usually go 7500 miles before approaching 0%.  If you are still under warranty I would follow what the owner's manual says and change even synthetic oil within one year or if the OLM tells you too. I wouldn't risk giving them a reason to deny a repair under warranty.  That's just my thoughts.

[dzs3fz]

My "Next Oil Change Sticker" reads 121,783 miles.  My actual mileage on DIC is 123,891.  MY OLM is at 33% and I use regular oil.  I just put on 3k miles on a trip to Galvenston, TX and I am having an oil change + tire rotation performed tomorrow.

[GoldEnclave]

GM does have an abundance of confidence in their cars' OLM algorithms. However, once they realised that the 2009 lambdas were stretching the new timing chain design, the OLM was reprogrammed to cut the drain interval approximately in half compared to what it had been. I do not recall if all lambdas after the 2009 model year also have the new more careful OLM algorithms, but maybe that is partly to explain why the OP's 2011 Enclave is calling for such a short drain interval.

[medicrxdoc]

The lambdas aren't the only OLM that was recalibrated.  Gm has done it on a few different models/engines now.  I wonder what damage was done in the mean time.....

[rbarrios]

the 2010's did not have the recal.
At least my 2010 Traverse did not.. Though I think some member said his was.

The 4 cyl Nox/Terrains recently also had notices to get the OLM recalibrated.

[KITT]

Curious to get feedback from anyone that might have insight:

I own a '10 Enclave and a '12 Acadia.  Changed oil on both vehicles at the dealer on same day in October.

'10 Enclave: regular oil, OLM today reads 50% -- driven 5,000 miles since change (total of 36k so far)

'12 Acadia: synthetic oil, OLM today reads 12% -- driven 5,000 miles since change (total of 8k so far)

My wife drives the Enclave, I drive the Acadia.  I drive more aggressively, but certainly not to the point where I'd expect to see the kind of differential described above, especially when the Acadia has the synthetic in it.  We both drive the same amount local v highway.  The conspiracy theorist in me thinks it has something to do with the fact that we bought the Enclave certified, and it's still under CPO program (free oil changes for 2 years -- only when OLM hits 50%).  The Acadia I bought brand new. 

[john 070]

Curious to get feedback from anyone that might have insight:

I own a '10 Enclave and a '12 Acadia.  Changed oil on both vehicles at the dealer on same day in October.

'10 Enclave: regular oil, OLM today reads 50% -- driven 5,000 miles since change (total of 36k so far)

'12 Acadia: synthetic oil, OLM today reads 12% -- driven 5,000 miles since change (total of 8k so far)

My wife drives the Enclave, I drive the Acadia.  I drive more aggressively, but certainly not to the point where I'd expect to see the kind of differential described above, especially when the Acadia has the synthetic in it.  We both drive the same amount local v highway.  The conspiracy theorist in me thinks it has something to do with the fact that we bought the Enclave certified, and it's still under CPO program (free oil changes for 2 years -- only when OLM hits 50%).  The Acadia I bought brand new. 

I can see how your '10 and '12's are totally different.  I would be satisfied with a readout that your '12 is giving you.  Even though there's no reason to replace synthetic oil every 5k, I could live with it.  I just don't get how at 1,333, we're beyond 50% already.  Even J.R. Ewing wouldn't toss out Pennzoil Platinum after 2515 miles of use.

[rbarrios]

Curious to get feedback from anyone that might have insight:

I own a '10 Enclave and a '12 Acadia.  Changed oil on both vehicles at the dealer on same day in October.

'10 Enclave: regular oil, OLM today reads 50% -- driven 5,000 miles since change (total of 36k so far)

'12 Acadia: synthetic oil, OLM today reads 12% -- driven 5,000 miles since change (total of 8k so far)

My wife drives the Enclave, I drive the Acadia.  I drive more aggressively, but certainly not to the point where I'd expect to see the kind of differential described above, especially when the Acadia has the synthetic in it.  We both drive the same amount local v highway.  The conspiracy theorist in me thinks it has something to do with the fact that we bought the Enclave certified, and it's still under CPO program (free oil changes for 2 years -- only when OLM hits 50%).  The Acadia I bought brand new. 

your 2010 is behaving just like my 2010 Traverse.
I reach 50% at roughly 5,000 miles.
It has the old algorithm- where it would reach close to 10,000 miles for an oil change.. like the 2009s.
Except the older models started having issues with the timing chain.
So the older ones got updated algorithms.
the 2010s did not..... though I also have not really seen timing chain issues on 2010's.

But- I and several Traverse members found -- by doing our owe Used oil analysis- that using Dino oil and going 5000 miles-- was about the safe place to change oil on the 2010's DI engine... and thats what Ive been doing.

Your 2012 has the updated OLM algorithm.

I also have a 2013 with the 3.6.
Ill be doing UOA on the oil to get a good idea of my vehicles characteristics-- this one runs full synthetic.
YOu bet im NOT changing full synthetic at 5000 miles... unless UOA calls for it.. but I doubt it.
my 1st UOA will be at about 4500 miles on oil. (engine has about 6000 on it)

[DVelasco68]

My OLM is 55% with 2,113 (on a 2013 Traverse LTZ)...

Based upon this, should be 4,700 between oil changes (at absolute zero)...

Will probably take it in around 4,000 - 4,500...

[JerseyDevil]

So the older ones got updated algorithms.
the 2010s did not..... though I also have not really seen timing chain issues on 2010's.

That's because the 2010 and newer have got updated timing chains.

[rbarrios]

That's because the 2010 and newer have got updated timing chains.

yes- correct.

[FalconEddy]

john 070, I'd keep a close watch on the OLM over the next couple of days and one week. This should give some type of indication of what type of percentage usage your vehicle is calculating on the very short term.

Also, I'd be checking the oil level to see where it stands right now, as well as how it looks and feels. Perhaps it is being viewed by the OLM as something other than just fresh oil. I don't know what abilities the vehicle has other than to measure time. But, if one car can travel 5000 miles and have an OLM reading of 50%, and another car travels the same distance and has an OLM reading of only 12%, then logic dictates something else is at play in the OLM systems ability to warrant calculating two vastly different sets of numbers.

For example, if an ever-so-slightly torn oil filter was placed into a vehicle, would the OLM drastically drop in percentage of oil life remaining, due to debris not being completely trapped within the oil filter?

Food for thought.

. . Falcon

[john 070]

john 070, I'd keep a close watch on the OLM over the next couple of days and one week. This should give some type of indication of what type of percentage usage your vehicle is calculating on the very short term.

Also, I'd be checking the oil level to see where it stands right now, as well as how it looks and feels. Perhaps it is being viewed by the OLM as something other than just fresh oil. I don't know what abilities the vehicle has other than to measure time. But, if one car can travel 5000 miles and have an OLM reading of 50%, and another car travels the same distance and has an OLM reading of only 12%, then logic dictates something else is at play in the OLM systems ability to warrant calculating two vastly different sets of numbers.

For example, if an ever-so-slightly torn oil filter was placed into a vehicle, would the OLM drastically drop in percentage of oil life remaining, due to debris not being completely trapped within the oil filter?

Food for thought.

. . Falcon

Thanks Falcon, I will watch it...I think I'm willing to do the Blackstone Labs thing if I end up draining it at 2,500......would be interesting to see if they can pickup that the oil is not spent and has a lot of useful life left.....

[GoldEnclave]

This website might answer some questions about what exactly the OLM measures.

 http://m.autos.aol.com/article/3000-mile-oil-change-not-needed/

[john 070]

This website might answer some questions about what exactly the OLM measures.

 http://m.autos.aol.com/article/3000-mile-oil-change-not-needed/

Nice one, Gold!  I wonder if our crankcase temp is never reaching the proper operating value, due to short trips/commute? 

Either that, or it must be the supercharger I installed....

[GoldEnclave]

Could be, but it could also be the twin spooling turbocharger that you added in sequence with the supercharger. Did you also add an intercooler and shroud?

[Billd]

Mine is at 41% and 8234 miles. Mobil 1 5w30.