Never run regular, unless your stuck out somewhere!!
Bad for the engine really, the Nissan manual states PULP and they built the damn thing, so theyd know best!
Ive found Optimax to be overrated, just my experience tho, could just be my area, I usually run BP Premium or Mobil Premium, had a shortage lately.. Speaking of which anyone ever ran 7-11 Evolution, theyve got a no ethanol tag, states 98 Octane and is fairly cheap for premium.
Regular usually sits from 92-94 RON
Premium 96- 98
Depends on how stingy your local servo is really.
Hell, if you want some real get up and go dump some avgas in it
Dont feel dumb to ask questions, if you dont ask, you'll never know, and isnt what these forums are bout?
Cheers
(nice bday present)