602 fuel

[ask0329]

I have currently been using 93 octaine pump gas that has the 10% ethanol. No issues to this date. I have recently found a local gas station that has started selling 91 octane with no ethanol. That is correct 0 ethanol blend. Straight 91 octane. Granted its a slightly lower octane I am assuming its probably better to run the 91 with no ethanol correct?

[dynoman14]

I would prefer to run the 91 with not EtOH but I am not sure you will make the same power as the oxygenate does help.

I am guessing you might have change jetting to lean 1-2 jets although you may run just fine.

I have had good success combining 1G race gas to 4G pump premium for decent power. The race gas adds some anti-knock protection and the EtOH provides some extra oxygenates.

[Mike Croley]

I have currently been using 93 octaine pump gas that has the 10% ethanol. No issues to this date. I have recently found a local gas station that has started selling 91 octane with no ethanol. That is correct 0 ethanol blend. Straight 91 octane. Granted its a slightly lower octane I am assuming its probably better to run the 91 with no ethanol correct?

With the 91 / no ethanol , you'll get a little less power and a little more fuel mileage . The car will also be more consistent . The lower octane isn't good , but it shouldn't be a problem .