Reply to "Are Viscosity Index Improver Polymers all that bad?"

miguelazevedoMember

quote:
Originally posted by Miguel Azevedo:
TPaul:
Stay with your rationale as exposed along your first 2 paragraphs. Paradoxically, the purported advantage of multigrades easing cold starts is even more real at the higher than 100C temperature range! You can easilly see this in a log-log chart of viscosity and temperature, as you extrapolate the straight line trend further into the high temperatures.
Cheers,
Miguel

PS: the text above needs correction. What I wanted to say was "associated to ease of cold starting, multigrades surpass monogrades in viscosity above 100C" . And viscosity -all things equal - is what separates metal from metal.

12/29/095:23 PM

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