Originally Posted by corey95civicex

i say they're all wrong, the better the gas the better the burn. 87 octane will cause your valves to rattle over time exspecially if you drive your car everyday, which is more than likely. 93 octane is the way to go, ive never had a problem on spark plugs or wires fouling out due to higher octane. plus your car will run smoother a lot long, thus better gas mileage. take from someonje who knows from experience.