Specifically for this car, which is better in your experience? Does anyone have any info/dyno graphs to show any differences if there are any?

I know 91 octane ethanol free will get better mileage due to higher available energy, but I think I read somewhere that the TL has quite an aggressive tune from the factory leading to pulled ignition timings even at high octanes?

So will the 91 octane E0 gas run better power wise for our cars? or will pulled timing kill any benefit over 93 octane E10?

 

You are just splitting hairs here. As long as you run premium you are good to go. Its like comparing 5w20 vs 5w30.

 

To be honest I've always wondered this question. But I agree with you EvillVirus, I think you're good either way.

 

Well, this is kind of one of those hotly debated topics with extremely biased sides and lobbyists on both sides and somewhat bipartisan support for increasing ethanol production to support crop farmers and ag companies like Archer Daniels Midland

If you google you will find a plethora of articles citing that ethanol is a net pollutant. It costs more energy to convert to usable energy than the liquid ethanol can produce in a combustion engine. Adding ethanol supposedly decreases MPG because it's such a sh*tty form of fuel (much like corn is a nutritionally useless food and even worse as a substitute for sugar). So you're polluting more, artificially increasing the price of food, subsidized not only by the govt/taxpayer but also the end food consumer, you, in order to support our ag industry to keep pumping out corn.

They are currently dumping some 6b+ gallons into our fuel annually and in less than ten years trying to bump that to over 35b gallons

It's also to reduce our dependency on foreign sources of oil. Hopefully the fracking boom and these massive shale discoveries will continue to push this country up the map on being a net oil exporter.

Give me 93 octane, hold the liquified corn on the cob bro.

 

I love fuel threads!

 

If I could find ethanol free fuel locally I'd rather use that. Ethanol is junk, period. I doubt you'll notice any difference just cruising around with 2 points less octane.

 

Yea, I would go ethanol free if I could, but the only place I know that has it is at a station near Madison by my dad's place. I do make sure to fuel up whenever I'm there.