OVERKILL
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Originally Posted by ZeeOSix
Originally Posted by ekpolk
Holy Smoke! Or maybe I should change that to "Expensive Vapor!"...look at those Noack numbers. I understand that Noack testing is a lab procedure that must be difficult to "translate" to actual behavior in a given engine, but 32%??? Being a bit hyperbolic, does that mean after an hour or so of driving, a third of the oil will have disappeared, and what's left will have un-sheared up to a 40wt??? OK, a lot hyperbolic, but is not 32% Noack still absurd? I know that's not for 0w-16, the specific topic, but those numbers for the 16s in the chart aren't too impressive either. I'm wondering at what point extreme lab-based Noack numbers will translate to unacceptable behavior (high consumption, thickened remaining oil, etc.) in real world operations???
There's probably a good engineering based reason why the Noack limit is currently 15%. Doubt it's some arbitrary number pulled out of the air.
Yes, and I believe Shannow has noted that they were able to get an exception to that limit for these new "super thin" oils?
Originally Posted by ekpolk
Holy Smoke! Or maybe I should change that to "Expensive Vapor!"...look at those Noack numbers. I understand that Noack testing is a lab procedure that must be difficult to "translate" to actual behavior in a given engine, but 32%??? Being a bit hyperbolic, does that mean after an hour or so of driving, a third of the oil will have disappeared, and what's left will have un-sheared up to a 40wt??? OK, a lot hyperbolic, but is not 32% Noack still absurd? I know that's not for 0w-16, the specific topic, but those numbers for the 16s in the chart aren't too impressive either. I'm wondering at what point extreme lab-based Noack numbers will translate to unacceptable behavior (high consumption, thickened remaining oil, etc.) in real world operations???
There's probably a good engineering based reason why the Noack limit is currently 15%. Doubt it's some arbitrary number pulled out of the air.
Yes, and I believe Shannow has noted that they were able to get an exception to that limit for these new "super thin" oils?