Originally Posted by jsenn
I would run 93 all day. however, even the vettes with trhe LS3 can run on 87, you jus lose some power. I don't remember who said it earlier, but the higher the octane rating, the WORSE fuel economy you get because it burns at a higher rate.
What we should all be hoping for is E85 capabilities, because that burns hotter than 93 and will give you some extra horses when using it.
wrong, e85 has less energy, it's ethanol based, you'll get worse mileage
you want to run the lowest octane fuel you can, without predetonation, any higher is a waste of money