Pennzoil ultra 10w30 good for extreme winter cold?

ziggy

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Let me get this straight, using a mix of 10w30 [-49 pour point] and 5w30 at temps down to 9F?
No brainer, of course it's good.
In the 60s,70s and 80's 10w30 was the #1 oil, and North America, north of Tennessee, did not come to a stop in the winter
Yeah a.mix...want too basically use them up..been sitting in my closet since 2013.time tio get rid of them. They were around $3.79 a quart clearance. Between $3.19 and $3.79 quart.
 

ziggy

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The Pennzoil is minus 47 F pour point. Ion amazon.it lists data..its pour point is minus 59 F. Flash point 435 F..its ccs 4,200 or 4,400. One of those two. But remember seeing its VI index...147. The 5w30 ultra VI index is like 167/169. That's spot more. But since the 10w30 is thin.or no,because its VI index is thicker? 147vs 167.
 

ZeeOSix

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I don't, but what relevance is that here? Flow characteristics when an engine is started would be more important than how easily it pours out of the bottle.
Yes, that's why there is a defined Cold Cranking and Pumpability Viscosity for each "W" rating in SAE J300. And they are both defined at a higher temperature than the pour point temperature.
 
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Toyota allowed the usage of conventional 10W-30 at temps above 0F in their 1MZ-FE engines. So, I think any synthetic 10W-30 should be fine down to 0F since they should have slightly better cold temp characteristics than their conventional counterparts.
 
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download (2).jpg

Source is Amsoil Australia website.
 
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The only thing believable on that chart are 5w-30 and 0w-30.
Look at any other chart for oil viscosity and outdoor temperature and you'll find the same thing. Unless all the Petrochemical Engineers are wrong?
 
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Technically 10W will pump slightly below 0F. But you better have a very healthy battery. In my experience, I wouldn't use it below 32F.
10w-XX has been used for many decades with temperatures lower than 32 degrees but you are entitled to your opinion..
 
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The Pennzoil is minus 47 F pour point. Ion amazon.it lists data..its pour point is minus 59 F. Flash point 435 F..its ccs 4,200 or 4,400. One of those two. But remember seeing its VI index...147. The 5w30 ultra VI index is like 167/169. That's spot more. But since the 10w30 is thin.or no,because its VI index is thicker? 147vs 167.
What does VI have to do with anything, or pour point for that matter? You do understand the difference of taking a nearly-frozen beaker of oil and “pouring it” vs trying to suck it from the same beaker? You can’t “blend” winter properties of oils… if you mixed 1 qt 10w30 and 4 qts 0w30 your lower temperature limits will still be that of the 10w30 oil. You simply can’t get around that fact… so, either your climate allows for use of 10w30, or you should find an oil with a lower number winter rating and use it exclusively, not mixed.
 
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10W30 is a little thick in my opinion. I would use a least a 5W30 and feel a lot better when it gets cold. We get wind chills of -30 every winter in SD for a short period of time.
Ambient winter lows of -30 to -35 deg F happen every winter here. Sometimes the stretches of BELOW ZERO days total more than 60 to 90 and the weather girls stop mentioning the negatives, just giving the absolute numbers instead. It makes people "feel" better.

I typically run a 5W or a 0W oil here in southcentral Alaska. For 5W-30 oils, I run synthetics with CCS numbers at and below 4000 @ -30 deg C (Kirkland and QSFS).

This was my just-in-time winter post. We're supposed to have our first chance of snow in 3 days -- more than an inch.

The leaves have fallen; snow is coming.
 
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Jackson_Slugger

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The syn 10W-30- will be fine in CT in winter, but like others I find the age of the oil a bit on in years at a decade old. Don't you have a lawn mower or snowblower to use this stuff in? Or give it to someone who does, use it for top off, etc.
 
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Can't think of any car made the last 20 years that spec'd 10W30, so unless this is an older model, why not use the recommended oil now and save the 10W30 for spring? Will it cause problems? Not likely, but if you get a cold snap, the engine might be slow to turn over and if the battery is weak, might not start.
Chrysler spec’d 10W-30 in the 3.5V6 and 4.0V6 engines. They were used thru the 2010 model year.
 

hrv

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Hi all I have some Pennzoil ultra synthetic I bought on clearance at autozone,2013. Got 2 bottles 5w30, 3 10w30. 4.5 quart sump.wanna use them this coming oil change. I seen thier data sheets... Minus 49 F pour point!. That's the 10w30. Temps here january,Feb lows 9-13 degrees F. Uve read of others,who some only,had engine lock up with Mobil one ep 10w30. At minus 13 F. I learned years ago,using dino 5w30 in this,caused problems at 13 degrees outside. You could hear the posting mooo noise,took seconds for that oil too pump n.lubricate. Quaker state dino.or car wouldn't turn over.90,stop early 2000s. Think 10w30 Ultra will be fine?
Why not look at what the owners book says for your vehicle for oil use in extreme cold winter...I am sure they have a recommended oil to use...
 
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Some old owners manuals suggestions
1965 Buick, 1979 Chev Malibu, 1985 Chev V8 Van, 1993 Dodge 2.2 and 1998 Plymouth 3.3.
 

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