its not necessarily a gain in performance but the car runs smoother. i did notice if i put premium it ran worse...but my car really does favor mid grade
Its not necessarily performance or your car runs smoother either.
Each different engine that is produced requires a certain level of octane to function properly hence the required "premuim gas only" stickers that you would find in gsr's, puting a lower octane in these kinds of vehicles can cuase premature ignition inside the piston chambers resulting in wear and even damage to your internals. the way you can tell this is if your engine starts knocking, and at that point, you're basically screwed (or getting there). just follow what your manual says and you'll be fine. B18B nonv-tec blocks run on regular B18C1&5 v-tec blocks are premuim only.
what are you talking about?
and by going green, i think he means to drive a hybrid, which isn't a bad idea (but i rather drive my gsr!
)