Ethanol /Premium Gas Mix 93 oct vs 92 Premium ethanol free

[Flavor 987S]

Buy the highest octane you can find (93) from the busiest (fresh) national brand gas station in your area. It's as simple as that. Don't worry about ethanol. If you want to fill up with ethanol free 91 octane prior to winter hibernation (plus StaBil) that would be fine.

[husker boxster]

Don't worry about ethanol IF you know that it has been regularly used in the car since new. If you switch to ethanol after yrs of regular gas, the ethanol will loosen up any sludge on the bottom of your gas tank. Guess where that sludge goes? All thru your fuel system and clogs everything along the way. New cars or cars that have used ethanol regularly won't have the sludge so no worries. But older cars that haven't used ethanol will be trouble if you start using ethanol (a tank in a pinch won't kill you).

The loss of 1 octane for non-ethanol fuel will be worth the lack of headaches the above creates. Your car's computer will figure out how to map to the 92.

[Cunningr]

What about adding Octane Booster to the lower quality Gas?

I use Octane boost about every other tank, and try to use a Higher Octane Premium on the in between. Has to do with my location and trying to lower fuel cost and maintaining my performance.

[Gilles]

I would love to have that choice and run 91 ethanol free gas..

[BYprodriver]

Originally Posted by Flavor 987S

Buy the highest octane you can find (93) from the busiest (fresh) national brand gas station in your area. It's as simple as that. Don't worry about ethanol. If you want to fill up with ethanol free 91 octane prior to winter hibernation (plus StaBil) that would be fine.

No it's not, gasoline has far more BTU's than ethanol & thus more power. Octane rating is a rating of resistance to ignition not power potential.

[Flavor 987S]

Originally Posted by tlzkaasen

or go ethanol free but settle for 91 or 92 octane based on the gas station.

I am not aware of any fuel in Wisconsin or Illinois that is ethanol free and 92 octane. Unless you are taking about a marina, race track or airport.

Originally Posted by BYprodriver

No it's not, gasoline has far more BTU's than ethanol & thus more power. Octane rating is a rating of resistance to ignition not power potential.

I made no statments about BTUs or power. So, I don't know why your making this response to my answer. What is your recommendation to tlzkaasen? And what do you dispute in my answer? Have you ever purchased fuel in Wisconsin or rural Illinois and understand the situation?

[Lew]

Originally Posted by BYprodriver

No it's not, gasoline has far more BTU's than ethanol & thus more power. Octane rating is a rating of resistance to ignition not power potential.

I want all those British Thermal Units I can get