In that case, I would run something like I do......a known name brand like Chevron, Shell, Amoco, something mainstream. Not Flash Foods or Achmed's magic carpet.
I’m just trying confirm my hunch. I was told to use 89 before. If everyone would say something like BP 87 or Shell 87 or something like that, it would be good enough for me.
My personal choice would be Sunoco but there are none in my area.