E100 vs 99.7% ethanol

[diodelphi]

E100 in pump stations is mix of 2% unleaded gas plus 88% pure Ethanol. it's name is denatured ethanol because you can not drink it.

I have no access to E100 or E85 from pump station because in my country there is no ethanol station.

I put pure ethanol (99.7% purity Absolute anhydrous Alcohol C2H5O with no addictive) in my tank.

I shop this ethanol from drugstores and i could drink it.

do you think this ethanol differ with E100?
I ask because i want to be sure this ethanol work with my car without any issue.

[Akari]

I don't really understand what you're after here. Are you attempting to run pure alcohol in a gasoline engine? What tune are you running?

[projek_01]

Why not just mix it in the same ratio E100 to be safe? Two things I see that could be potential problems in running home made E100.

1. Seals being damaged by the higher ethanol content. Should be okay short term
2. The lack of a additive package. Fuels contain corrosion inhibitors, stabilizers, detergents to maintain the fuel system and engine while being burnt.

The -OH group undergoes hydrolysis and produces water. Without a proper stabilizer and corrosion inhibitor, you will likely see a rusted gas tank and fuel lines.

What about sacrificing a few HP and run regular gas/meth injection?

I know more about crude oils and less about refined products. Maybe someone else can chime in.

[zkv476]

Must be some expensive fuel at however much it must be per volume. The reason it's E85 is because the gasoline acts as a lubricant as well. You often see people recommending occasionally running a tank of 93 even on E85 for a reason. Yes it's different from E100. E100 still has 2% gasoline for a good reason. E85 is pretty often considered safe on our cars, 99.7% with no gasoline and you're venturing into something that people haven't typically tested. It'll burn and run, but longevity and reliability is beyond me.

[Tromatic]

In for the meltdown, especially without a tune. That stuff is 30-60 dollars a gallon here, how cheap is it there?

[diodelphi]

Originally Posted by Akari

I don't really understand what you're after here. Are you attempting to run pure alcohol in a gasoline engine? What tune are you running?

i use a ecutek tune from a famous tuner

[diodelphi]

Originally Posted by Tromatic

In for the meltdown, especially without a tune. That stuff is 30-60 dollars a gallon here, how cheap is it there?

i shop 1litre 2$

[diodelphi]

Originally Posted by projek_01

Why not just mix it in the same ratio E100 to be safe? Two things I see that could be potential problems in running home made E100.

1. Seals being damaged by the higher ethanol content. Should be okay short term
2. The lack of a additive package. Fuels contain corrosion inhibitors, stabilizers, detergents to maintain the fuel system and engine while being burnt.

The -OH group undergoes hydrolysis and produces water. Without a proper stabilizer and corrosion inhibitor, you will likely see a rusted gas tank and fuel lines.

What about sacrificing a few HP and run regular gas/meth injection?

I know more about crude oils and less about refined products. Maybe someone else can chime in.

Thanks
I use 93 after 5 tank E100.
some times i put 15% gasoline for longer trips .
just put E100 for shorter trips for street racing

[mid_life_crisis]

This looks like a good place to ask a sort of related question.
How much ethanol do you need to add to the gas to make it worth tuning for it?
Would say, 20% be worth it or do you need a lot more?

[SomeoneWhoIsntMe]

I think the real story here is that you can buy 99.7% pure anhydrous grain alcohol at the drug store in Tehran. I hear the clubs are great there too. Time to book a flight.

[diodelphi]

Originally Posted by mid_life_crisis

This looks like a good place to ask a sort of related question.
How much ethanol do you need to add to the gas to make it worth tuning for it?
Would say, 20% be worth it or do you need a lot more?

My tuner say ethanol over 70% is not useful.
but i prefer E100 not for more power because it make it easy to me i just fill ethanol at home in my tank and no need to go to pump station and mixing it.
mixing is not easy task because i exactly do not know how much ethanol is in my tank .
another mixing problem is manually mixing ethanol with gas take a bit longer for completly mixing.

[diodelphi]

Originally Posted by SomeoneWhoIsntMe

I think the real story here is that you can buy 99.7% pure anhydrous grain alcohol at the drug store in Tehran. I hear the clubs are great there too. Time to book a flight.

my english undrestanding is not good.
please share your idea more clear to me
Thanks

[mid_life_crisis]

Originally Posted by diodelphi

My tuner say ethanol over 70% is not useful.
but i prefer E100 not for more power because it make it easy to me i just fill ethanol at home in my tank and no need to go to pump station and mixing it.
mixing is not easy task because i exactly do not know how much ethanol is in my tank .
another mixing problem is manually mixing ethanol with gas take a bit longer for completly mixing.

Interesting, but it didn't answer my question.

[Td-d]

Originally Posted by mid_life_crisis

This looks like a good place to ask a sort of related question.
How much ethanol do you need to add to the gas to make it worth tuning for it?
Would say, 20% be worth it or do you need a lot more?

From the fueling point of view, given the wide range of AF error that the ecu can handle, you have a wide range to play with.

From the power tuning point of view, I would think that unless you are going to be tuning it for ethanol, even at low concentrations such as 20% / 30%, there really is no point - since you won't really get much extra power out of it (unless the fuel you currently run is so crap that the stock tune is neutered). Unlike a turbo'd setup, where one could argue that at least some ethanol would result in a cooler, more knock resistant mixture, on an NA engine it's not really an issue.

@diodelphi - why don't you run a flex fuel sensor setup? I have the same issue here (no pump E85), and will install a Zeitronix - that way, given the imprecise nature of home brew mixing of gas and ethanol, you know that the ecu is correctly fueling for whatever the mixture. I think running E99.7 without any of the additives will cause problem in the longer run - potentially expensive problems.