I'm 720mi into my current OCI with SynPower 5-30 in the sump. OLM is at 93%. Onstar estimates I could go another 9500mi. Would you go that far?
OLM and OCI
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Originally Posted By: Gwhaley262
I'm 720mi into my current OCI with SynPower 5-30 in the sump. OLM is at 93%. Onstar estimates I could go another 9500mi. Would you go that far?
10,000 miles huh? Thats too long for me. IMO
I'm 720mi into my current OCI with SynPower 5-30 in the sump. OLM is at 93%. Onstar estimates I could go another 9500mi. Would you go that far?
10,000 miles huh? Thats too long for me. IMO
Originally Posted By: addyguy
People who follow the OLM on these engines will be in for a nasty suprise as these engine age....
...or maybe not. GM must have done testing and decided the fuel dilution was OK. Whether that means some will need engine rebuilds at 100K or 200K will have to be seen.
People who follow the OLM on these engines will be in for a nasty suprise as these engine age....
...or maybe not. GM must have done testing and decided the fuel dilution was OK. Whether that means some will need engine rebuilds at 100K or 200K will have to be seen.
DI's known issues would be a bit scary at that long of an interval.
C'mon let's tighten up! 3-5k with some oil analysis to verify fuel dilution issues known to be a problem.
OP, has your OLM got the updated programming?
C'mon let's tighten up! 3-5k with some oil analysis to verify fuel dilution issues known to be a problem.
OP, has your OLM got the updated programming?
Depends on when the programming was updated. The 'nox was built in May and bought in June. I haven't taken it into the dealer for anything so I'm not sure. My 'Nox has the I4 2.4L LAF engine.
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And why them 2.4DI motors run so rough and loud???
I have to disagree. My 2.4DI runs pretty smooth and it has a nice burble to it if you can call it that. Now if its in ECO mode there just a tad bit of vibration. Likely due to adjustment of fuel timing.
Originally Posted By: addyguy
Normally, I'd say yes, I'd go 10k on a syn oil.
But with DI fuel problems, no way. I'd go 5-6k at most, especially on a new engine.
People who follow the OLM on these engines will be in for a nasty suprise as these engine age....
As much as I would like to say "go for the 10k", I agree with addyguy with respect to the DI engine. I think GM has done a good job dealing with fuel dilution on their DI engines, but why take chances? Go 6k and do an oil analysis to check fuel dilution, then if the results are good, go for it.
Since you have SynPower in your engine, you have already changed from factory fill. How many miles were on your 'nox when you changed?
Normally, I'd say yes, I'd go 10k on a syn oil.
But with DI fuel problems, no way. I'd go 5-6k at most, especially on a new engine.
People who follow the OLM on these engines will be in for a nasty suprise as these engine age....
As much as I would like to say "go for the 10k", I agree with addyguy with respect to the DI engine. I think GM has done a good job dealing with fuel dilution on their DI engines, but why take chances? Go 6k and do an oil analysis to check fuel dilution, then if the results are good, go for it.
Since you have SynPower in your engine, you have already changed from factory fill. How many miles were on your 'nox when you changed?
I replaced the factory fill just after the 600mi break-in period. I put SynPower in 'cause other equinox owners have had better looking UOAs than on M1, which possibly was the FF.
Normally I'd say go with the OLM. A properly calibrated OLM will take into consideration all of those things that are hard on oil like short trips in cold weather, lots of stop & go driving, etc.
OTOH, aren't these the DI engines that had their OLMs software adjusted downwards by a software update because they were calibrated too high??
OTOH, aren't these the DI engines that had their OLMs software adjusted downwards by a software update because they were calibrated too high??
My sister and father both have DI engines in their Nox/Terrain. One is the 2.4 the other is the 6 cyl. In both of them I'm running the OLM down to around 50% and then doing the OC...better safe than sorry I figure.
OldCowboy...I'm not sure, but I think the OLM was only recalibrated for the 6 cylinder engines and not for the 2.4 eco, but I'm not certain on that.
OldCowboy...I'm not sure, but I think the OLM was only recalibrated for the 6 cylinder engines and not for the 2.4 eco, but I'm not certain on that.
Originally Posted By: Ram01
And why them 2.4DI motors run so rough and loud???
They are a little loud, the injectors make quite a racket...but I would never call them rough. My dads 2.4 runs smooth as silk.
And why them 2.4DI motors run so rough and loud???
They are a little loud, the injectors make quite a racket...but I would never call them rough. My dads 2.4 runs smooth as silk.
Hi,
Gwhaley262 - Yes, this matter has been well covered on BITOG including input from GM people invloved in the OLM project
Typically the time/distance to the OCI as determined by the LOM is not linear. It may show that your OCI is in fact due at a shorter interval than you currently think
Gwhaley262 - Yes, this matter has been well covered on BITOG including input from GM people invloved in the OLM project
Typically the time/distance to the OCI as determined by the LOM is not linear. It may show that your OCI is in fact due at a shorter interval than you currently think
Originally Posted By: LS2JSTS
My sister and father both have DI engines in their Nox/Terrain. One is the 2.4 the other is the 6 cyl. In both of them I'm running the OLM down to around 50% and then doing the OC...better safe than sorry I figure.
OldCowboy...I'm not sure, but I think the OLM was only recalibrated for the 6 cylinder engines and not for the 2.4 eco, but I'm not certain on that.
Ya, that is what I thought too. Have we seen a UOA on a 2.4 DI yet? Do they have the same problem with fuel dilution? Does it still have the same size sump as the pre-DI EcoTecs?
My sister and father both have DI engines in their Nox/Terrain. One is the 2.4 the other is the 6 cyl. In both of them I'm running the OLM down to around 50% and then doing the OC...better safe than sorry I figure.
OldCowboy...I'm not sure, but I think the OLM was only recalibrated for the 6 cylinder engines and not for the 2.4 eco, but I'm not certain on that.
Ya, that is what I thought too. Have we seen a UOA on a 2.4 DI yet? Do they have the same problem with fuel dilution? Does it still have the same size sump as the pre-DI EcoTecs?
As far as the sump goes....my fathers Terrain 2.4 DI engine has the same 5qt sump as my 2.2 non DI ecotec.
I hope I don't get in trouble for this but here is a link to a UOA thread of the Equinox forum I'm on.
Equinox UOAs
Equinox UOAs
Originally Posted By: LS2JSTS
As far as the sump goes....my fathers Terrain 2.4 DI engine has the same 5qt sump as my 2.2 non DI ecotec.
Nice but it seems like they do have the same fuel dilution issues so I don't think it would matter to me. Although that last post on the first page didn't have fuel in either the 2.4 or the 3.6.....and one posted at 7%....
...that can't be good.
As far as the sump goes....my fathers Terrain 2.4 DI engine has the same 5qt sump as my 2.2 non DI ecotec.
Nice but it seems like they do have the same fuel dilution issues so I don't think it would matter to me. Although that last post on the first page didn't have fuel in either the 2.4 or the 3.6.....and one posted at 7%....
Originally Posted By: cp3
Originally Posted By: LS2JSTS
As far as the sump goes....my fathers Terrain 2.4 DI engine has the same 5qt sump as my 2.2 non DI ecotec.
Nice but it seems like they do have the same fuel dilution issues so I don't think it would matter to me. Although that last post on the first page didn't have fuel in either the 2.4 or the 3.6.....and one posted at 7%....
...that can't be good.
The 7% came from a 3.0 6 cylinder if I'm reading that post correctly. And honestly, who knows how the sample was collected...may have been idling prior to taking it, or taken just after a short trip to "warm" the oil...afaik, it is vital to get a accurate fuel dilution to get the engine and oil up to full operating temp.
If I really wanted to know and be sure. I would take the proper precautions and take a proper sample and send it in. That way you know for sure as many variables as possible were eliminated.
Bottom line. You are probably correct, the 2.4 probably does have fuel dilution issues to some extent, the one listed showed 2%. I don't think it is as bad as seen in the 6 cylinders though.
Originally Posted By: LS2JSTS
As far as the sump goes....my fathers Terrain 2.4 DI engine has the same 5qt sump as my 2.2 non DI ecotec.
Nice but it seems like they do have the same fuel dilution issues so I don't think it would matter to me. Although that last post on the first page didn't have fuel in either the 2.4 or the 3.6.....and one posted at 7%....
The 7% came from a 3.0 6 cylinder if I'm reading that post correctly. And honestly, who knows how the sample was collected...may have been idling prior to taking it, or taken just after a short trip to "warm" the oil...afaik, it is vital to get a accurate fuel dilution to get the engine and oil up to full operating temp.
If I really wanted to know and be sure. I would take the proper precautions and take a proper sample and send it in. That way you know for sure as many variables as possible were eliminated.
Bottom line. You are probably correct, the 2.4 probably does have fuel dilution issues to some extent, the one listed showed 2%. I don't think it is as bad as seen in the 6 cylinders though.
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