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#4084255 - 05/01/16 09:54 AM QSUD in Ecotec: 2 qts. consumed in 3K !
Benzadmiral Offline


Registered: 10/12/05
Posts: 4923
Loc: Da Swamp
Okay, I'll admit I haven't been checking the oil on the Regal with the 2.4L Ecotec as often as I should. The Buick has 65K miles, 3K miles/4 months on the current fill of 5W-30 QSUD dexos. For the first two years of my ownership, it's gotten AC Delco dexos oil from the dealer every 6 months/4500 miles, and the oil level never budged during an OCI. When my 4 "free" OCs were used up, I thought I'd try QSUD.

My last oil level check, I think, was in early March (mea culpa). I drew out the dipstick this morning, and it was bone dry. It took 2 qts. of Castrol Magnatec 5W-30 dexos to bring the level up to where it should be. I don't see any oil on the ground, and the engine compartment looks dry as well -- there are no obvious leaks on the block or on the components below.

True, coincidence is not causation . . . but it sure looks that way. Have any of you had a sudden change in oil consumption with QSUD, esp. on an Ecotec engine? This could be the old worry about synthetic cleaning stuff out inside my engine so that leaks occur. But how could that much crud have accumulated with my short OCIs?

Or is it simply that this engine does not "like" QSUD?
_________________________
* *
-- Paul W. (The Benzadmiral)
('11 Buick Regal CXL, charcoal/cream, 2.4L NA)
http://benzadmiral-uncle.blogspot.com/

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#4084261 - 05/01/16 10:02 AM Re: QSUD in Ecotec: 2 qts. consumed in 3K ! [Re: Benzadmiral]
Garak Offline


Registered: 12/05/09
Posts: 24051
Loc: Regina, Saskatchewan, Canada
Sometimes, it will take an OCI or two for things to stabilize. Of course, your engine may not "like" this particular oil, but it hasn't been really given much of a chance yet.
_________________________
Plain, simple Garak.

2008 Infiniti G37 - Shell ROTELLA T6 Multi-Vehicle 5w-30, NAPA Gold 7356
1984 F-150 4.9L - Quaker State GB 10w-30, Wix 51515

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#4084309 - 05/01/16 10:34 AM Re: QSUD in Ecotec: 2 qts. consumed in 3K ! [Re: Benzadmiral]
mrsilv04 Offline


Registered: 12/08/06
Posts: 8143
Loc: Illinois
Give it some time. They tend to use oil when brands are changed, until things settle down.

This is why it is a good idea to find an oil, and then stay with it. I use the same oil in everything that I drive. No unexpected consumption issues.
_________________________
2004 Silverado - on its 3rd Jasper engine in less than one year.

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#4084330 - 05/01/16 10:59 AM Re: QSUD in Ecotec: 2 qts. consumed in 3K ! [Re: mrsilv04]
Inspecktor Offline


Registered: 03/16/14
Posts: 620
Loc: Twin Cities MN USA
Originally Posted By: mrsilv04
Give it some time. They tend to use oil when brands are changed, until things settle down.

This is why it is a good idea to find an oil, and then stay with it. I use the same oil in everything that I drive. No unexpected consumption issues.

+1
_________________________
2001 Ranger 3.0 145,000 mi
2006 Dakota 4.7 151,000 mi
1986 GL1200A 72,000 mi
2001 Buick LeSabre Limited 291,000 mi

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#4084333 - 05/01/16 11:01 AM Re: QSUD in Ecotec: 2 qts. consumed in 3K ! [Re: Benzadmiral]
MedicRxDoc Offline


Registered: 04/12/08
Posts: 79
Loc: Leesport, PA
There is also a TSB about oil consumption if it doesn't settle down.

Link to TSB

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#4084357 - 05/01/16 11:19 AM Re: QSUD in Ecotec: 2 qts. consumed in 3K ! [Re: Benzadmiral]
BikeWhisperer Offline


Registered: 01/20/15
Posts: 1172
Loc: Cascadia
I had an Ecotec back 2005-2010 that absolutely guzzled Mobil 1. As it got older it started using all oil but not ever at the rate that it drank Mobil 1. It did better on Napa Synthetic which was cheaper anyway (when on sale).

Some engines just like to consume different oil formulations...try something else and see if things continue (indicating a possible problem) or things settle down.
_________________________
2013 F150 XLT SCrew Eco-Boost
0w-40 Edge, Fram XG10575, Spectre Air Filter

2016 Ford Escape SE Eco-Boost 2.0L
5w-30 Edge EP, Fram XG3614





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#4084393 - 05/01/16 11:51 AM Re: QSUD in Ecotec: 2 qts. consumed in 3K ! [Re: Benzadmiral]
stower17 Offline


Registered: 06/15/10
Posts: 552
Sorry to hear about the oil burning problem youre having. This is a known problem with that engine and there are TSB's about the issue. There are a few threads on this site regarding the issue as well, mainly in the Equinox. If youre under warranty i would go to your dealer with your concern. When my ecotec was new i used QSUD or actually "Q Horsepower" exclusively for the first couple of years. This is not a QSUD problem.

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#4084421 - 05/01/16 12:23 PM Re: QSUD in Ecotec: 2 qts. consumed in 3K ! [Re: Benzadmiral]
WobblyElvis Offline


Registered: 09/23/14
Posts: 1269
Loc: Toronto Canada
It's hard to get an accurate oil level reading on this engine. The cartridge filter will slowly drain back into the sump causing the level to rise over night [no anti drain back valve]. This is a false high reading. According to the manual, you are supposed to check the oil within a few minutes of shut down.
My ecotec uses more synthetic oil than conventional.

Not to hi-jack this thread but it is relevant. Would someone explain to me the mechanism by which more oil would be used when switching brands. Hard to believe it is true.

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#4084437 - 05/01/16 12:40 PM Re: QSUD in Ecotec: 2 qts. consumed in 3K ! [Re: WobblyElvis]
stower17 Offline


Registered: 06/15/10
Posts: 552
Originally Posted By: WobblyElvis
It's hard to get an accurate oil level reading on this engine. The cartridge filter will slowly drain back into the sump causing the level to rise over night [no anti drain back valve]. This is a false high reading. According to the manual, you are supposed to check the oil within a few minutes of shut down.
My ecotec uses more synthetic oil than conventional.

Not to hi-jack this thread but it is relevant. Would someone explain to me the mechanism by which more oil would be used when switching brands. Hard to believe it is true.


What? If your oil level is going up after the engine has been shut off for awhile then you might not have the oil filter cap torqued down tight enough. The o-ring on the oil filter nipple is what keeps the oil in the filter housing and if its not torqued enough it will drain down to the oil pan. Ive been around these engines for over a decade now and have made all these mistakes when first getting accustomed to them.

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#4084440 - 05/01/16 12:44 PM Re: QSUD in Ecotec: 2 qts. consumed in 3K ! [Re: Benzadmiral]
stower17 Offline


Registered: 06/15/10
Posts: 552
The shoulders of the oil filter cap should be making contact with the engine block. If its not then its not torqued enough and oil will drain back.

Sorry this is off the OP topic but just had to clarify. Many people dont torque down the cap tight enough.

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#4084512 - 05/01/16 02:17 PM Re: QSUD in Ecotec: 2 qts. consumed in 3K ! [Re: WobblyElvis]
Garak Offline


Registered: 12/05/09
Posts: 24051
Loc: Regina, Saskatchewan, Canada
Originally Posted By: WobblyElvis
Would someone explain to me the mechanism by which more oil would be used when switching brands. Hard to believe it is true.

It's been observed often enough, but I've never seen a valid mechanism presented. wink
_________________________
Plain, simple Garak.

2008 Infiniti G37 - Shell ROTELLA T6 Multi-Vehicle 5w-30, NAPA Gold 7356
1984 F-150 4.9L - Quaker State GB 10w-30, Wix 51515

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#4085171 - 05/02/16 08:00 AM Re: QSUD in Ecotec: 2 qts. consumed in 3K ! [Re: Benzadmiral]
Benzadmiral Offline


Registered: 10/12/05
Posts: 4923
Loc: Da Swamp
Thanks, everybody,

I did check the oil within a few minutes of shutting down, as I always do -- and as I did in January and February, when I didn't notice any movement of the oil on the stick. It does seem odd that the engine would suddenly start burning oil just at the 62K mark, after I changed to QSUD.

That TSB: Is that something that a dealer will do out of warranty? My extended warranty just ended about 3-4K ago.
_________________________
* *
-- Paul W. (The Benzadmiral)
('11 Buick Regal CXL, charcoal/cream, 2.4L NA)
http://benzadmiral-uncle.blogspot.com/

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#4085197 - 05/02/16 08:37 AM Re: QSUD in Ecotec: 2 qts. consumed in 3K ! [Re: Inspecktor]
Bgallagher Offline


Registered: 04/17/12
Posts: 3159
Loc: Boston, MA
Originally Posted By: Inspecktor
Originally Posted By: mrsilv04
Give it some time. They tend to use oil when brands are changed, until things settle down.

This is why it is a good idea to find an oil, and then stay with it. I use the same oil in everything that I drive. No unexpected consumption issues.

+1


+2 Castrol Magnetic should be a good oil for that.
_________________________
2017 Chevy Traverse - 28k - Delco Dexos 1 and PF63
2014 Chevy Equinox - 22k - Delco Dexos 1 and PF457G
2015 GMC Terrain - 22k- Delco Dexos 1 and PF457G

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#4085241 - 05/02/16 09:29 AM Re: QSUD in Ecotec: 2 qts. consumed in 3K ! [Re: Benzadmiral]
stower17 Offline


Registered: 06/15/10
Posts: 552
Does Buick have the 5yr/100k mile powertrain like the Chevys did?

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#4085264 - 05/02/16 09:57 AM Re: QSUD in Ecotec: 2 qts. consumed in 3K ! [Re: stower17]
Benzadmiral Offline


Registered: 10/12/05
Posts: 4923
Loc: Da Swamp
Originally Posted By: stower17
Does Buick have the 5yr/100k mile powertrain like the Chevys did?

I hope so; I'll check my paperwork. However, the car first went into service in late 2010, I think, so the 5 years may be up.
_________________________
* *
-- Paul W. (The Benzadmiral)
('11 Buick Regal CXL, charcoal/cream, 2.4L NA)
http://benzadmiral-uncle.blogspot.com/

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