Originally Posted by budhayes3

Close...oil will take on the lubrication properties of the thinner weight when cold then have the lubrication qualities of the thicker weight when warm (on a multi-viscosity oil), but physically it is the other way around. This can be easily seen when you do an oil change on a warm engine as opposed to a cold one...the oil on the warm/hot engine will drain very quickly and feel thinner to your fingers, but try draining the oil on an engine that has sat overnight, it will come out more slowly, feel thicker...and make less of a mess in the drain pan lol.