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#4750093 - 05/07/18 11:52 AM Noack Volatility?
BlueOvalFitter Offline


Registered: 02/28/03
Posts: 6003
Loc: Cajun Country, La.
How important is Noack Volatility in the quality of motor oils today? Is it more important in synthetic motor oils than in conventional motor oils? Now that our more modern engines have DI, turbo's, and increased horse power, the extra heat has to wreak more havoc on the engine oil. How would the Noack Volatility testing help with these extra heat contributors?
_________________________
2007 F150 XL, 4.2 V6, 4R75E Transmission
Pennzoil Platinum Euro 0W40, WIX 51516 XP Oil Filter
"One Filter, One OCI!"

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#4750225 - 05/07/18 02:38 PM Re: Noack Volatility? [Re: BlueOvalFitter]
bullwinkle Offline


Registered: 10/09/04
Posts: 7584
Loc: Cincinnati, OH, USA
Biggest effect high NOACK has is burning off lighter parts of the oil, leaving thicker stuff behind, requiring more top offs and potentially causing carbon in the combustion chamber.
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#4750252 - 05/07/18 03:19 PM Re: Noack Volatility? [Re: bullwinkle]
BlueOvalFitter Offline


Registered: 02/28/03
Posts: 6003
Loc: Cajun Country, La.
Originally Posted By: bullwinkle
Biggest effect high NOACK has is burning off lighter parts of the oil, leaving thicker stuff behind, requiring more top offs and potentially causing carbon in the combustion chamber.

In that case, you would think it would be wiser to choose an oil for a DI engine with a lower Noack number over, say, a required 5W30 oil, right? ???
I did a GOOGLE search about it and found this;
http://www.perkinelmer.com/CMSResources/...lVolatility.pdf
_________________________
2007 F150 XL, 4.2 V6, 4R75E Transmission
Pennzoil Platinum Euro 0W40, WIX 51516 XP Oil Filter
"One Filter, One OCI!"

USA

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#4750308 - 05/07/18 04:30 PM Re: Noack Volatility? [Re: BlueOvalFitter]
Danh Offline


Registered: 10/16/10
Posts: 1727
Loc: .
Some engine oil makers say they donít disclose Noack volatility because the results are imprecise and hard to repeat, as suggested in the article you attached. So I wouldnít place too much emphasis on that measure.

And while engines are getting more sophisticated and power dense, it doesnít necessarily follow that oil temps are higher: they still broadly follow coolant temperature unless the use is extreme.

I donít think you can go wrong with one of the major brands; maybe stick with a dexos1Gen2 and/or SN Plus. If you want to go a step further you may want to look at MSDS documents to see how much PAO/GTL is used, which tend to contribute to better Noack results. Some Mobil1 products are PAO rich and we know Pennzoil is a big GTL user.

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#4750334 - 05/07/18 04:56 PM Re: Noack Volatility? [Re: BlueOvalFitter]
burla Offline


Registered: 11/07/16
Posts: 246
Loc: sonoma
Depends on how the NOACK numbers are achieved, if the low NOACK was achieved by dumping in a bunch of Vii's it is a temporary number dependent on when those very vii's shear off, if the NOACK is achieved by group 4/5 base oil the NOACK is closer to a stable number.

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#4750346 - 05/07/18 05:15 PM Re: Noack Volatility? [Re: Danh]
BlueOvalFitter Offline


Registered: 02/28/03
Posts: 6003
Loc: Cajun Country, La.
Originally Posted By: Danh
Some engine oil makers say they donít disclose Noack volatility because the results are imprecise and hard to repeat, as suggested in the article you attached. So I wouldnít place too much emphasis on that measure.

And while engines are getting more sophisticated and power dense, it doesnít necessarily follow that oil temps are higher: they still broadly follow coolant temperature unless the use is extreme.

I donít think you can go wrong with one of the major brands; maybe stick with a dexos1Gen2 and/or SN Plus. If you want to go a step further you may want to look at MSDS documents to see how much PAO/GTL is used, which tend to contribute to better Noack results. Some Mobil1 products are PAO rich and we know Pennzoil is a big GTL user.

Does Pennzoil have the advantage over other brands being it uses GTL decisively? How about AMSOIL?
_________________________
2007 F150 XL, 4.2 V6, 4R75E Transmission
Pennzoil Platinum Euro 0W40, WIX 51516 XP Oil Filter
"One Filter, One OCI!"

USA

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#4750395 - 05/07/18 06:17 PM Re: Noack Volatility? [Re: BlueOvalFitter]
1JZ_E46 Online   content


Registered: 04/04/16
Posts: 1115
Loc: Oregon
NOACK volatility is a good indicator for how clean it will keep the rings and turbocharger. Places where the oil gets extremely hot (north of 400F). The less that burns off, the less deposits form. Generally, the lighter the baseoil, the more it burns off.
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#4750422 - 05/07/18 06:38 PM Re: Noack Volatility? [Re: BlueOvalFitter]
bullwinkle Offline


Registered: 10/09/04
Posts: 7584
Loc: Cincinnati, OH, USA
Originally Posted By: BlueOvalFitter
Originally Posted By: Danh
Some engine oil makers say they donít disclose Noack volatility because the results are imprecise and hard to repeat, as suggested in the article you attached. So I wouldnít place too much emphasis on that measure.

And while engines are getting more sophisticated and power dense, it doesnít necessarily follow that oil temps are higher: they still broadly follow coolant temperature unless the use is extreme.

I donít think you can go wrong with one of the major brands; maybe stick with a dexos1Gen2 and/or SN Plus. If you want to go a step further you may want to look at MSDS documents to see how much PAO/GTL is used, which tend to contribute to better Noack results. Some Mobil1 products are PAO rich and we know Pennzoil is a big GTL user.

Does Pennzoil have the advantage over other brands being it uses GTL decisively? How about AMSOIL?
Pennzoil (PYB 5W20) did have some awesome NOACK numbers, for a while (2013), as reported by PQIA-but not anymore:
http://www.pqiamerica.com/Feb2014/consolidated5w20ALL.html
DI engines seem to be a special case, the jury is still out (other than 2nd Gen. Dexos).
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#4750679 - 05/07/18 10:23 PM Re: Noack Volatility? [Re: BlueOvalFitter]
ZeeOSix Offline


Registered: 07/22/10
Posts: 17519
Loc: PNW
I have a thread in this forum comparing the major brands in 5W-30, and they all were around 11% NOACK and lower, which is pretty good since you'll never find much out there that's 7% or less.

https://www.bobistheoilguy.com/forums/ub...-30#Post4745039

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#4750807 - 05/08/18 06:08 AM Re: Noack Volatility? [Re: ZeeOSix]
BlueOvalFitter Offline


Registered: 02/28/03
Posts: 6003
Loc: Cajun Country, La.
Originally Posted By: ZeeOSix
I have a thread in this forum comparing the major brands in 5W-30, and they all were around 11% NOACK and lower, which is pretty good since you'll never find much out there that's 7% or less.

https://www.bobistheoilguy.com/forums/ub...-30#Post4745039

Thanks Z06, I missed that thread.
I see the PP/PUP has the lowest Noack # in that chart.
What do you use in your Z06 'Vette, if you don't mind me asking?
_________________________
2007 F150 XL, 4.2 V6, 4R75E Transmission
Pennzoil Platinum Euro 0W40, WIX 51516 XP Oil Filter
"One Filter, One OCI!"

USA

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#4750821 - 05/08/18 06:41 AM Re: Noack Volatility? [Re: BlueOvalFitter]
Virtus_Probi Offline


Registered: 06/25/15
Posts: 3934
Loc: New England
Originally Posted By: BlueOvalFitter
Originally Posted By: ZeeOSix
I have a thread in this forum comparing the major brands in 5W-30, and they all were around 11% NOACK and lower, which is pretty good since you'll never find much out there that's 7% or less.

https://www.bobistheoilguy.com/forums/ub...-30#Post4745039

Thanks Z06, I missed that thread.
I see the PP/PUP has the lowest Noack # in that chart.
...

I believe that PP NOACK loss is for the obsolete dexos1 5W30 product...I have no reason to suspect that their d1G2 offering will be a lot different, but I haven't seen a test result for it yet and SOPUS doesn't share that info in the PDS.
The PQIA reported the NOACK loss for M1 5W30 AP as 8.5%, just in case you feel like spending $40 for a jug of oil! If you are looking to spend even more, you can get M1 5W30 ESP or try Ravenol's 5W30 DXG, both around 6% NOACK loss and maybe about $50 for 5l.
_________________________
2014 Forester XT, 80500 miles
Last Change;
Valvoline Full Synthetic 5W30 d1G2
Tokyo Roki 15208AA170 filter

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#4751163 - 05/08/18 01:41 PM Re: Noack Volatility? [Re: BlueOvalFitter]
ZeeOSix Offline


Registered: 07/22/10
Posts: 17519
Loc: PNW
Originally Posted By: BlueOvalFitter
Originally Posted By: ZeeOSix
I have a thread in this forum comparing the major brands in 5W-30, and they all were around 11% NOACK and lower, which is pretty good since you'll never find much out there that's 7% or less.

https://www.bobistheoilguy.com/forums/ub...-30#Post4745039

Thanks Z06, I missed that thread.
I see the PP/PUP has the lowest Noack # in that chart.
What do you use in your Z06 'Vette, if you don't mind me asking?


Mobil 1 full synthetic, same as the factory fill. Wanted to try something different to see if the engine sounds any different.

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#4751636 - 05/08/18 10:16 PM Re: Noack Volatility? [Re: Virtus_Probi]
dailydriver Offline


Registered: 03/14/06
Posts: 9155
Loc: Pennsylbammyvania
Originally Posted By: Virtus_Probi
If you are looking to spend even more, you can get M1 5W30 ESP or try Ravenol's 5W30 DXG, both around 6% NOACK loss and maybe about $50 for 5l.


I will happily GLADLY pay well OVER $50.00 for a 5L jug of the D1G2 DXG when it is available! wink

BTW; Most places get ~ $13.19/quart for the 5W-30 ESP Formula, but yes, depending on how much you buy at a time online, that can go down to ~$8.50/quart. (Does XOM even bottle it in 5 quart jugs?)
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Amsoil Ea15K51 filter
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#4751762 - 05/09/18 06:50 AM Re: Noack Volatility? [Re: dailydriver]
Virtus_Probi Offline


Registered: 06/25/15
Posts: 3934
Loc: New England
Originally Posted By: dailydriver
Originally Posted By: Virtus_Probi
If you are looking to spend even more, you can get M1 5W30 ESP or try Ravenol's 5W30 DXG, both around 6% NOACK loss and maybe about $50 for 5l.

I will happily GLADLY pay well OVER $50.00 for a 5L jug of the D1G2 DXG when it is available! wink
BTW; Most places get ~ $13.19/quart for the 5W-30 ESP Formula, but yes, depending on how much you buy at a time online, that can go down to ~$8.50/quart. (Does XOM even bottle it in 5 quart jugs?)

I can't remember the exact deal I got on ESP, something like $100 for 12 liters on Amazon...all I know is that it was under $10/l. This was a while ago and I think it was more expensive there the last time I looked...I have noticed that 4l or 5l jugs are available in Europe, but have never seen them in a shop or on Amazon here.

I'm with you on the Ravenol, interested to try it even at the present Amazon prices. Just need d1G2 to show up!
_________________________
2014 Forester XT, 80500 miles
Last Change;
Valvoline Full Synthetic 5W30 d1G2
Tokyo Roki 15208AA170 filter

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