How do you make car synthetic oil?

oil does not make your car move, it reduces friction in the moving parts in order to keep your car from tearing itself apart

No it cannot.

5w-20 of any synthetic motor oil brand.

May change from year to year so there is no set answer. It really does not matter as synthetic oil is synthetic oil. Actually, it makes a difference who makes the synthetic oil. First, there is the...

You cannot tell by looking at the oil. Owners manual will tell you. You can use synthetic even if it came with conventional. But if the manufacture recommends synthetic then by all means use it.