# Question 30da6

Jul 16, 2016

Here's a table of densities of the various grades at 20 °C.

#### Explanation:

$\textcolor{w h i t e}{m} \text{SAE"color(white)(mm)"Density/kg·m"^"-3}$
stackrel(—————————color(white)(ll))("15W-40"color(white)(mmmm)879)#
$\textcolor{w h i t e}{l} 50 \textcolor{w h i t e}{m m m m m m l l} 875$
$\textcolor{w h i t e}{l} 40 \textcolor{w h i t e}{m m m m m m l l} 872$
$\textcolor{w h i t e}{l} 30 \textcolor{w h i t e}{m m m m m m l l} 869$
$\textcolor{w h i t e}{l} \text{20W} \textcolor{w h i t e}{m m m m m l l} 865$
$\textcolor{w h i t e}{l} \text{10W-40} \textcolor{w h i t e}{m m m m} 863$
$\textcolor{w h i t e}{l} 20 \textcolor{w h i t e}{m m m m m m l l} 861$
$\textcolor{w h i t e}{l} \text{10W} \textcolor{w h i t e}{m m m m m l l} 857$
$\textcolor{w h i t e}{l} \text{5W-40} \textcolor{w h i t e}{m m m m l l} 854$
$\textcolor{w h i t e}{l} \text{10W-60} \textcolor{w h i t e}{m m m m} 850$

The densities don’t change very much with SAE Grade.

It's the viscosities that change.