5,000miles oem semi synthetic.
Wile I'm not into getting in deep as to what is better Dino or Syn. I've heard Dino oil's can do some things better
rust prevention . neutralizing acids So possibly semi synthetic is a great choice . A blend is better then conventional oil .
I have a friend who swears great luck with his own blend Mobil 5W30 conventional at 2 qt's and 3 qt's Mobil One 5W30
BummerIt was just some thing I remember reading in an auto mag .
I for one use synthetic & have for years