Q$5.$ Using the values in the table below $($from The Engineering Toolbox$)$ for different grades of oil:

a$)$ Is the viscosity given as absolute $($dynamic$)$ or kinematic viscosity?

b$)$ Using the provided viscosity of ISO Grade $32$ oil at $40C$ in centistokes,

calculate the absolute viscosity $($in cP and $N*\frac{s}{m^2})$

convert this value to $lb*\frac{s}{i}{n}^2$ and compare with the provided value for

absolute viscosity.

c$)$ Using the provided viscosity of ISO Grade $220$ oil at $212F$ in Reyns,

calculate the kinematic viscosity in $i\frac{n^2}{s}$

convert this value to centistokes and compare with the provided value for

kinematic viscosity.

d$)$ Plot $($by hand$)$ the kinematic viscosity $($in centistokes$)$ versus temperature $($in $C)$ for

the six oils provided. Which one exhibits the most favorable viscosity index for use

in a system with extreme temperature variations?

ISO Grade Oils $-$ Viscosities and Densities