Pennzoil yellow 5w20 -45 C pourpoint ?

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Has anyone checked out some of the coventional oils for pour points ?
well pennzoil's web site claims -45c (-49F) and Quaker State
comes in at -33 c ,could this be right ?
Yellow bottle seems to be just as good as most synthetics.
any comments on this ?
 
Yup. Pennzoil is one of the, if not the best "conventional"
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oil you can buy!
 
We're talking about a hydroisomerized "GPII+" base oil 5w-20 ? Ever wonder why the last few generations on motor oils have made the use of syn oils kinda a waste of money unless the little extra heat resistance is needed or 10,000 mile + oil change intervals are needed???
 
Are you sure that is the latest info? Their website still will not display info when I click for data sheets under conventional oil.
 
I apologize for this being hard to read, but here is the latest data, dated April 2008


April, 2008
TYPICAL PHYSICAL AND CHEMICAL PROPERTIES
PENNZOIL
® CONVENTIONAL MULTI-VISCOSITY MOTOR OIL

TEST METHOD TYPICAL RESULTS

SAE Viscosity Grade SAE J300 5W-20 5W-30 10W-30 10W-40 20W-50
API Service Category SM SM SM SM SM
ILSAC GF-4 GF-4 GF-4
Gravity, °API ASTM D-287 32.7 31.4 0.330.3 30.8 29.0
Specific Gravity @
15.6°C(60°F) ASTM D-287 0.862 0.863 0.872 0.875 0.884
Flash Point, °C ASTM D-93 229 216 221 204 214
Pour Point, °C ASTM D-97 -39 -39 -30 -30 -24
Color ASTM D-1500 3.0 3.0 3.0 3.0 3.0
Viscosity
@ 40°C, cSt ASTM D-445 47.3 63.9 69.7 96.9 158.3
@ 100°C, cSt ASTM D-445 8.4 10.5 10.53 14.0 17.6
Viscosity Index ASTM D-2270 150 158 135 147 122
CCS Viscosity, cP (°C) ASTM D-5293 5,100 (-30) 5,800 (-30) 6,170 (-25) 6,280 (-25) 7,060 (-15)
MRV Viscosity, cP (°C) ASTM D-4684 12,400 (-35) 15,900 (-35) 15,400 (-30) 16,700 (-30) 25,600 (-20)
HT/HS Viscosity, cP
ASTM D-4683 2.6 3.0 3.1 3.7 4.6
Noack volatility, % ASTM D-5800 14.7 14.5 13.7 14.3 4.9


These characteristics are typical of current production. While future production will conform to Shell's specification, variations in these characteristics may occur. The
information contained herein is subject to change without notice.
 
Anyone else notice that over a period of time the Noack volatility for Pennzoil conventional (and Valvoline for that matter) has been slowly rising?

It doesn't seem to affect the real world oil consumption for Pennzoil YB (maybe PP, though) or the UOAs but I am curious as to what changes/reformulations are responsible for this. And is this trend due to a difference in philosophy from the blenders regarding the inevitable tradeoffs in low temp/starting protection vs. HTHS and high temperature operation?

Maybe Molakule/DNewton3/Johnny could shed some light on this.

Gary
 
You would have to ask a chemist or oil formulator this question, I have no clue. I do know that Pennzoil has never listed it's actual Noack numbers. They just list what the standard is they have to meet.
 
Johnny,

The last line from the April 2008 Pennzoil data you posted lists the Noack numbers for each viscosity.

I think GF-4 has to be < 15%. I would assume the listed values are representative of what you would see with 5w-20, 5w-30, etc.
I realize that the specifics vary from batch to batch or is it lot to lot?

Some oil manufacturers such as Chevron/Havoline do not list it. I think Pennzoil used to just list it as
I am believing this since the values listed for Pennzoil are highest for 5w-30 and lowest for 20w-50, making me believe, like the other data listed, that this is the actual average Noack values.

And if I am just being dense here Johnny, then feel free to enlighten me!

Thanks,
Gary
 
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