Dude, you've chosen the best oil grade for this engine.
This is what's used all over the world, in much worse and tougher conditions than in Pakistan.
Unfortunately many people are stuck on the decades old ideology of GAARHA TAILLL IS BETTTRR. Ustaad jii qasam khai si.
Caltex havoline is one of the top brands too all over the world. Stick to it. No need to change the brand!
And, stick to this grade too. If you're too concerned by confusing comments above, go at max 5w30 thicker. Not an iota more than this.
And, again Caltex havoline is a top brand. Stick to it. Or may consider other top brands like amsoil, Valvoline.
Avoid gaarha tail wali opinions too as you will get tons of them, even from dealerships.
Don't forget the dealerships until very recently were stuck on 20w50! An ancient grade, not even brought closer to modern vehicles anywhere in the world.. unless the car's already junk.
