What is better about synthetic motor oil than regular motor oil?

Question

What is better about synthetic motor oil than regular motor oil?

Answer 1

The difference lies in the fact that synthetic motor oils are created utilizing a specially "synthesized" base oil where the size of the oil molecules are all of an ideal weight and of a consistent size. While a conventional motor oil, despite the refining processes, is made up of different molecule sizes which are mixed together, along with various waxes and impurities, a fully synthetic oil is made to provide a much purer base oil, with less waxes and with a uniform ideal particle size to help increase the oils viscosity level.

Answer 2

it doesn't break down or degrade when it gets hot...

Answer 3

it's more viscous, and lasts a lot longer. rub both synthetic and standard oil between your fingers and you can feel the difference.  

Answer 4

It protects better, gives you a tad better mileage, handles extreme heat and cold better and pretty much never breaks down. You only have to change it because it does get dirty and the additives don't last forever.