Ethanol free gas best for di turbo?

[BurrWinder]

Originally Posted By: Propflux01
Originally Posted By: turtlevette
Convert it to e85 and enjoy way more power.



Not!! Ethanol has less BTU's per gallon than straight gasoline. More has to be used in combustion to achieve the same amount of power, hence why MPG is always less.


Here we go again with the ethanol misinformed.. YES - less BTU'S yes, but can run more timing and boost with the higher blends. IT IS NOT a simple BTU to BTU equation, tho... That is what we are talking about... Poor Man's premium when blended with E85 to like 35% alcohol... depending on application...



Originally Posted By: turtlevette
Convert it to e85 and enjoy way more power.

I'd like to hear a proper technical explanation of why e10 is bad for a turbo engine.

Not no food for fuel or no mandates. A non political tech explanation.



Yes, gets used twice... Once to make the ethanol (corn hootch... just like the shiners intended !! ) and again as corn gluten meal...
no waste there...

Of course not everyone knows this - so we hear about it everytime this "food for fuel" issue comes up....

BurrWinder

 

[MrHorspwer]

Originally Posted By: turtlevette

I'd like to hear a proper technical explanation of why e10 is bad for a turbo engine.

Not no food for fuel or no mandates. A non political tech explanation.



You never will, because there isn't one.

Ethanol is an anti-knock agent, just like tetraethyl-lead, MMT, and MTBE were before it. All blends of fuel need an anti-knock agent to sustain a reasonable octane rating. Ethanol is cheap, easy to produce, and not as poisonous to humans or the earth (this is, of course, realitive).

That's really about it. There's nothing harmful about ethanol. There is no reason not to use it in a reasonably modern, regularly driven automobile. Yeah, it has less energy density and you take a small fuel economy hit. It's not harmful though.

Because it is hygroscopic, it doesn't store well for long periods of time and maybe isn't the best for marine environments. Certain rubber compounds are also averse to alcohols, so older vehicles may have an issue after a while. This is especially true for old power equipment and even some new power equipment (usually cheap Chinese junk).

Those are the facts about ethanol. Anything more than that is probably political spin.

If you want to talk about alternatives to ethanol, you can go back to TEL and MMT. Unless you like "cumulative neurotoxicity", it's probably best for everyone that they've been removed from gasoline and will never come back. That leaves the oxygenates: Methanol, ethanol, MTBE, and ETBE. Methanol isn't an option and we've already talked about ethanol. MTBE is an option and remains popular in much of the world. It is a serious groundwater pollutant though. Some people don't care about that though (like China... China doesn't care much about groundwater pollution). ETBE is a great option on paper... except when that paper is used to make dollar bills. MTBE is sourced from methane produced from natural gas. It's cheap. ETBE is based from ethanol and though it doesn't have many of the shortfalls of ethanol described above, it will always be more expensive than ethanol.

 

[sciphi]

I'd use the freshest 93 octane fuel possible. E10 or not. Find a warehouse club or other big gas station that goes through a lot of fuel and fill up there.

 

[Y_K]

Originally Posted By: MrHorspwer
Ethanol is an anti-knock agent, just like tetraethyl-lead, MMT, and MTBE were before it.


So, when does ethanol stops being an anti-knock agent and starts being a fuel, please?

 

[Shannow]

Originally Posted By: Y_K
Originally Posted By: MrHorspwer
Ethanol is an anti-knock agent, just like tetraethyl-lead, MMT, and MTBE were before it.


So, when does ethanol stops being an anti-knock agent and starts being a fuel, please?


Anti knock agents are things that are/were added at "additive treat levels", not 10s of percents.

 

[Y_K]

Originally Posted By: Shannow
Anti knock agents are things that are/were added at "additive treat levels", not 10s of percents.


Thank you. The previous orator was so convincing that it seemed like it wouldn't matter if they added 5% to 15% of donkey pi$s or Coca Cola for that matter to the fuel we use in our motors

 

[Shannow]

Originally Posted By: Y_K
Originally Posted By: Shannow
Anti knock agents are things that are/were added at "additive treat levels", not 10s of percents.


Thank you. The previous orator was so convincing that it seemed like it wouldn't matter if they added 5% to 15% of donkey pi$s or Coca Cola for that matter to the fuel we use in our motors


http://www.iasj.net/iasj?func=fulltext&aId=21783

4 or 5 RONs for 10% V/V versus 1%w/V is the difference between an alternative fuel and an Antiknock additive.

 

[itguy08]

No problems here, running the cheapest 87 swill in mine, over 91k miles. Use what's cheapest.