0W oils; is the fear eligible ?

[Zolton]

Originally Posted by edyvw
5w-40 is 3-4x thicker than 5w-30 in extreme cold[/size].

I really, REALLY want to hear explanation of this. Please elaborate![/quote]

Originally Posted by edyvw
Originally Posted by Zolton

And, point is?


Are you tracking you own replies?

 

[DirectRejection]

This thread had so much promise.

 

[edyvw]

Originally Posted by Zolton
Originally Posted by edyvw
5w-40 is 3-4x thicker than 5w-30 in extreme cold[/size].

I really, REALLY want to hear explanation of this. Please elaborate!


Originally Posted by edyvw
Originally Posted by Zolton

And, point is?


Quote
Are you tracking you own replies?

I asked you for explanation, not chart. I asked you to elaborate.
So, the point of this is? What does this mean if you start vehicle at -30c?

 

[Zolton]

Did you think 0w was always thinner than 5w or 10w?

 

[gamefoo21]

I wish I could find it but a few years ago, I stumbled on a manufacturer vid with two engines at -30 and see through valve covers. One filled with 0w40 and the other with 5w40.

Iirc, it took 10-15 seconds longer for the 5w to start flowing through the valve train. That wasn't coating and full lube just showing up.

 

[Kamele0N]

Its for 0w30 vs 10w30....@4:00

But this are 80's also...nowadays oils are much better (XHVI & GTL synthetic)

 

[Lowflyer]

Originally Posted by buster
He doesn't bring anything to the forum.
Enough of mutual admirations? Once again nothing to contribute for the topic?

 

[edyvw]

Originally Posted by Zolton
Did you think 0w was always thinner than 5w or 10w?

It seems that you really do not know how cold performance is measured, otherwise you would explain what I have asked you.

 

[Zolton]

Originally Posted by edyvw
Originally Posted by Zolton
Did you think 0w was always thinner than 5w or 10w?

It seems that you really do not know how cold performance is measured, otherwise you would explain what I have asked you.


Oh, so the graph is backwards, or is it upside down?

 

[demarpaint]

The video above is sobering when it comes to using a 10W30 vs. 0w30 in extreme cold. Granted the video is old, it drives a compelling message home with regard to extreme cold weather. I'd like to see the difference at those temps between 0W30 and 5W30.

 

[edyvw]

Originally Posted by Zolton
Originally Posted by edyvw
Originally Posted by Zolton
Did you think 0w was always thinner than 5w or 10w?

It seems that you really do not know how cold performance is measured, otherwise you would explain what I have asked you.


Oh, so the graph is backwards, or is it upside down?


Graph is fine. You just do not have any idea how cold performance is measured.

 

[gamefoo21]

Originally Posted by Kamele0N
Its for 0w30 vs 10w30....@4:00

But this are 80's also...nowadays oils are much better (XHVI & GTL synthetic)



I swear the video I saw specifically looked at *w40s but memory and videos are fluid things. LoL

 

[Zolton]

Originally Posted by edyvw


Graph is fine. You just do not have any idea how cold performance is measured.


Sure I do, I look at the graph.

 

[Quattro Pete]

Originally Posted by Zolton
Originally Posted by edyvw


Graph is fine. You just do not have any idea how cold performance is measured.


Sure I do, I look at the graph.

Widman used to have a disclaimer on his website (where you generated that graph) that results below freezing point are likely to be inaccurate due to use of VIIs and pour point depressants in oils.

 

[Zolton]

Yes, but it still tells us which oil is thinner and thicker than one another.

Plus, it does correlate with micro rotary viscometer data.

It's not that I "don't know" how oil is tested in cold, as was rudely suggested, I simply choose not to rely on one source.

 

[kschachn]

I'm still confused about this however:
Originally Posted by Zolton
I believe 0w-40 (and Euro 0w-30) were developed for this very reason; 5w-40 is too thick in cold to lube a turbo quickly ,or for VVT, or even for short-hop driving. 5w-40 is 3-4x thicker than 5w-30 in extreme cold.

What other sources are you citing in your statement above? Does a VVT operation depend on the starting viscosity or the operating one? All oil grades look pretty thick to me in the cold, per your graph.

Is your chart based on rotary viscometer measurements or ?

 

[Quattro Pete]

Originally Posted by Zolton
Yes, but it still tells us which oil is thinner and thicker than one another.
But how did you arrive at "3-4x thicker"?

 

[edyvw]

Originally Posted by Zolton
Yes, but it still tells us which oil is thinner and thicker than one another.

Plus, it does correlate with micro rotary viscometer data.

It's not that I "don't know" how oil is tested in cold, as was rudely suggested, I simply choose not to rely on one source.

I did not rudely suggested. I am politely suggesting that you do not have any idea how it is measured.

 

[edyvw]

Originally Posted by Quattro Pete
Originally Posted by Zolton
Yes, but it still tells us which oil is thinner and thicker than one another.
But how did you arrive at "3-4x thicker"?



Same way he is "measuring" cold performance of an oil: using his "gut."

 

[Zolton]

Any science academy is able to calculate these numbers. I am starting to think people don't really know what they mean. 3 times thicker in cold is 3 times thicker in cold. That's science talking.