Quote:
Originally Posted by smbrm
Just add to the debate, VI is not really relevant if you don't understand the permanent shear stability or the HTHS of the oil.  |
I concur.
Also note that only a one point difference at 40C makes a bigger difference in the VI number than a point difference at 100C. That chart above sort of illustrates this as the Sustina has both the lowest 40C and 100C KV. If my engine were (theoretically) designed to run at 100C between 8-9 cSt then the Sustina would be a poor option.
I personally take VI
cum grano salis and think it's not the best rating to base judgement on.
What I find great about these long, entertaining and often educational oil analysis debates is just when we're thinking we've got our fingers on the button the ALMS teams go run 24 hours endurance races on engines that make several hundred horse power on straight 0 weight oil. I love when auto racing does that.
Is anyone here obsessing this much about he quality of the food that goes in their mouths as we do about oil? I bet if we all focused on that a little more we, instead of our engines, would all perform better and last a little longer. just sayin'