Reply to "351C lubrication system & lubricants"

dave2811Member

quote:
Originally posted by Rocky:

My daughter will definately use this info in her poster board. It is also nice to know that the experimental results make sense!

Thanks, Dave!

Rocky

As your budding tribologist becomes more versed in the science of Newtonian fluids, she may want to become familiar with "true" viscosity units of measure (SUS, cSt). SAE 10W-40 is not a viscosity. It is a label that defines the performance of a fluid that behaves like an SAE 10 at low temperature, and an SAE 40 at high temperature.

Each of these grades (10 and 40) has a viscosity index on how they perform at certain low and high temperatures, measured on a logarithmic scale.

More reading here:
http://www.engineeringtoolbox....viscosity-d_397.html

2/2/142:49 PM

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