Best Engine Oil for 2015 mustang ecoboost

[Jaideepthardak]

I have been using mobil 1 extended performance 5w-30 engine oil but engine sound still there.

Also, engine light goes and come back after 10-15 days .

[Ponyryd]

Engine noise? Oil won’t cure that.
And what light? Oil light or check engine light.

Welcome btw.

[Jaideepthardak]

Check engine light
The code is for too much oxygen in bank 1