What's the best oil to use for a 2010 ford tarus with 55000 miles?

What's the best oil to use for a 2010 ford tarus with 55000 miles?

There's no "best" oil to use.
Stick with the OEM 5w20 oil from Ford, unless you feel the need to go with something like Mobil 1 or Royal Purple synthetics.

Whatever the owners manual says to use