Would you consider Valvoline Restore and Protect in your Euro car?

[altaylar]

First it’s shearing, not “sheering”. But after that I’m only asking you about your statement where you said the VRP product would “sheer much faster”. Why would you think that? It would have to be related to the amount or type of VM used in the product since oil itself doesn’t shear. I wanted to know why you thought VRP itself would be more prone to mechanical shear.

You could have a monograde SAE 40 oil with a fairly large HT/HS that isn’t going to mechanically shear, due to the absence of any VM. Yes the HT/HS value is measured under rotation and shear forces but that’s not the same as an oil “shearing” due to VM cleaving.

Thanks for correcting my typo, i keep doing that all the time. So I understand that you agree that that to make this oil euro spec, Valvoline would have to increase it's shear resistance. Yet you are also arguing that it would not slow down oil get sheared down. Also i see that you are really sure that nothing but VM effects sheer stability of an oil. I dont think I am the person who could be helpful here

 

[kschachn]

Thanks for correcting my typo, i keep doing that all the time. So I understand that you agree that that to make this oil euro spec, Valvoline would have to increase it's shear resistance. Yet you are also arguing that it would not slow down oil get sheared down. Also i see that you are really sure that nothing but VM effects sheer stability of an oil. I dont think I am the person who could be helpful here

No I don't. The shear heating in the bearing is nothing like the shear forces that can cleave a polymer molecule. Most engines do not have issues with mechanical shear of the VM. You're conflating two different uses of the word shear and two different outcomes.

Monograde oils do not mechanically shear as the molecules are far too small, but they do heat in the bearing. Again two different mechanisms and two different outcomes.

I'm not sure if Valvoline would have to increase the shear resistance of their oil to meet any specific European approval for stay-in-grade performance. Would they have to increase the HT/HS? Maybe, depending on which approval you're referring to. It would have sufficient HT/HS to meet some approval requirements. But obtaining an approval is more than just this performance parameter.

I'm not sure what your objective is in this thread but you're not clear in how you're conflating permanent viscosity loss due to polymer cleaving and meeting a specific HT/HS requirement.

 

[altaylar]

No I don't. The shear heating in the bearing is nothing like the shear forces that can cleave a polymer molecule. Most engines do not have issues with mechanical shear of the VM. You're conflating two different uses of the word shear and two different outcomes.

Monograde oils do not mechanically shear as the molecules are far too small, but they do heat in the bearing. Again two different mechanisms and two different outcomes.

I'm not sure if Valvoline would have to increase the shear resistance of their oil to meet any specific European approval for stay-in-grade performance. Would they have to increase the HT/HS? Maybe, depending on which approval you're referring to. It would have sufficient HT/HS to meet some approval requirements. But obtaining an approval is more than just this performance parameter.

I'm not sure what your objective is in this thread but you're not clear in how you're conflating permanent viscosity loss due to polymer cleaving and meeting a specific HT/HS requirement.

Monograde oils do not shear? You are really surprising me. I have seen your comments on a couple of other threads where it seemed like you were trying to pick a fight with new members. I will just assume I am the lucky one today and I will let it go. Because I honestly believe you are more knowledgeable then you seem to me at the moment sir.

 

[kschachn]

Monograde oils do not shear? You are really surprising me. I have seen your comments on a couple of other threads where it seemed like you were trying to pick a fight with new members. I will just assume I am the lucky one today and I will let it go. Because I honestly believe you are more knowledgeable then you seem to me at the moment sir.

Correct.

 

[BMWTurboDzl]

I would not mind using it, but I would also keep my oil change interval significantly shorter than manufacturer`s suggestion. The first thing comes to mind with euro vs non euro oils is the HTHS and detergency. VRP will probably sheer much faster, and be less resistant to high temperature around the Turbo. So maybe I would do a 3K mile interval? So I would treat VRP almost like a cleaning additive rather than an engine oil replacement. In just 10-12k miles you would be done with all 4 cycles

HTHS isn't a problem because almost all Euro cars today are running on 20 grades or lower. They're also long drain oils so VRP in 30 grade at 5k miles should be no problem.