if i use, example;dino oil 5w30 or synthetic blend 5w30,and change both oils after 3000miles,do i have any benefit using synthetic blend over dino oil??i drive firebird v6 92 112500 miles on it.can dino oil handle same job like synthetic blend oil would?i drive a lot in hot traffic,exessive idling, high speeds 140km/h,stuff like that.only thing that i can think of is that,that synthetic blend can clean engine better than dino oil would.i just loosing my mind when i think this stuff
help me get peace of mind

