Your 60fts need some work. I pulled off 2.1s with all seasons lol and i know i can do better.
Run whatever fuel grade your engine is tuned for. I am still on the stock tune (87 octane) but I do run 89 just because...running a higher octane than what your engine is tuned for does nothing (I should take my own advice...).
Matthew 26:52-54 / Go Pack Go!
1987 Mustang GT Hatchback - 2V Mod Swap In The Works
1997 Lincoln Town Car, PI Intake/Cams, Sofa-On-Wheels, "Fat Tony" we call it
2001 GT Convertible - D1SC / Geared / Cammed / 440wh 400wt - TOTALED 2/2019