Heres a tip
Engine oil come with this format

5w-40

The front number (5w) you can safely ignore unless you live in cold climate which we are not

The back number 40 refer is viscosity.
Lighter means like water
Thicker means like condensed milk

Me personally would take ?w-20.
Very light, engine smooth, better FC
People say engine might tear faster
But the pros out weight the cons


For brands just stick to mainstream one, petronas shell etc