I run Mobil 1 Synthetic 5w-30. Definately recommend. I couldn't get it changed due to being at college and not having ANY money at all for a while and the car went 10k on a change...the oil was still clear, and looked almost new. So DEFINATELY recommend. (I ALWAYS CHANGE MY OIL 3K OTHER THAN THAT)...but it's good to have the security that I can put 10k on it.