I read that part? of sequence iiih test is about maintaining protective viscosity and thermal durability of oil that resists breakdown and stay-in-grade performance. Also how the oil resists the damaging effects of heat ...
For the SN+? the proposed viscosity increase specification limit is 150 percent!
So the %150 is the limit for oil viscosity increase (thickening)! Is that correct?
Curious how you figure out other factors. If the viscosity goes up, how do you measure the ability of one oil to lubricate better than another? Is there a term or any measurement for that?
Do you know what I mean? Hypothetically speaking if an oil got thick within the limit but it is no longer slippery (e.g. turned into honey) as oppose to another oil that got more thick but it is still slippery (i.e. can lubricate better). How do you measure that?
Hopefully this question won't make the experts mad.
I don't have the best track record with my "curiosity" questions ...
For the SN+? the proposed viscosity increase specification limit is 150 percent!
So the %150 is the limit for oil viscosity increase (thickening)! Is that correct?
Curious how you figure out other factors. If the viscosity goes up, how do you measure the ability of one oil to lubricate better than another? Is there a term or any measurement for that?
Do you know what I mean? Hypothetically speaking if an oil got thick within the limit but it is no longer slippery (e.g. turned into honey) as oppose to another oil that got more thick but it is still slippery (i.e. can lubricate better). How do you measure that?
Hopefully this question won't make the experts mad.
I don't have the best track record with my "curiosity" questions ...