i run royal purple 5w30. I have since 09. also use it in my subi's. **** having the dealership change it, i dont trust them as far as i can throw them. for all i know i could hand them 6quarts of RP I BOUGHT and they would put autozone generic brand in it and keep my oil. ive heard enough "joy ride" stories to know not to trust those punks with my car unless its something i simply cannot fix. if you want an answer, get
Z Speed Performance Aluminum Undershroud and change the oil yourself like i do, it has an easy access door that makes life easy. And its not made of cheap chinese garbage plastic.