Question #30da6

1 Answer
Jul 16, 2016

Answer:

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

Explanation:

#color(white)(m)"SAE"color(white)(mm)"Density/kg·m"^"-3"#
#stackrel(—————————color(white)(ll))("15W-40"color(white)(mmmm)879)#
#color(white)(l)50color(white)(mmmmmmll)875#
#color(white)(l)40color(white)(mmmmmmll)872#
#color(white)(l)30color(white)(mmmmmmll)869#
#color(white)(l)"20W" color(white)(mmmmmll)865#
#color(white)(l)"10W-40"color(white)(mmmm)863#
#color(white)(l)20color(white)(mmmmmmll)861#
#color(white)(l)"10W"color(white)(mmmmmll)857#
#color(white)(l)"5W-40"color(white)(mmmmll)854#
#color(white)(l)"10W-60"color(white)(mmmm)850#

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

It's the viscosities that change.