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C-dub

ShaddyVanDaddy wrote: ↑Mon May 18, 2020 6:37 pm Is it true that ethanol free gas is “way” better for long term storage?

I'm not a chemist chemist nor a very mechanical person. I believe that long term storage of gasoline is not good for any engine regardless of ethanol or not, but is worse with ethanol because of its attraction of water. IIRC, even ethanol free gasoline will turn to varnish or a varnish like substance after enough time. From m Goldwing forum friends, also IIRC, they use something called "seafoam" in their gas tanks for winter storage of their bikes when they won't be able to ride for several months. Since I ride year round with only a 2-3 week hiatus during the worst of weather in the "winter" here in Texas I didn't bother reading up on its use.

C-dub

puma guy wrote: ↑Sun May 17, 2020 11:16 am
C-dub wrote: ↑Fri May 15, 2020 8:08 pm
puma guy wrote: ↑Fri May 15, 2020 10:58 am
C-dub wrote: ↑Wed May 13, 2020 6:15 pm I've thought about "making" my own ethanol free gas for my mower and Stihl multitool motor. It's not difficult to do, but some equipment would make it so simple. I'm sure some of our chemists here can confirm this. I'm considering getting a separatory funnel and stand to do this. Since ethanol attracts water all one needs to do is mix in a cup or more of water to a half gallon of E-10 or E15 gas, shake to mix well, then just let it sit for several hours. The heavier water/ethanol mix will settle to the bottom, while the nearly pure lighter gasoline will remain at the top. Then, in my plan, I would just let the water/ethanol mix out the bottom of the separatory funnel until only the gasoline remained. There would be an easily visible line of separation. The only thing holding me up at this time is what to do with the water/ethanol mixture. It is still flammable and I don't know how I would get rid of it yet.
Gasoline is a complex blend of many petroleum constituents, plus additives. I'd check the octane and other qualities before using it. Probably simpler to by ethanol free gas. I've read of using aviation gas mixed with regular, but that could be a tedious project with out access to a research and motor octane engine. Also, while I'm not a pilot, I believe the fuel air mixture for plane engines is different than mogas engines. Jets and turbo prop engine use Jet fuel (basically high quality kerosene) so don't confuse it with avgas for cylinder engines.
It might be easier to buy ethanol free gas. Just a few years ago the closest place I could get some was at least 40 miles away. Now there’s a Buccees about 20 miles away.

For my plan I would need to use 93 octane and expect to end up with 87-88.
It's strange. I did a search for ethanol free gasoline in DFW area. Very limited availability versus my are Houston. There are three Bucee's in the DTW area, but I don't think they're close to you. We have many of them nearby. Good luck in your endeavor.

I do have the Pure Gas app on my phone. According to it the nearest ethanol free gas to me is just over 20 miles at the Buc-Ee's in Denton. I've used this app on a couple of trips on the bike and seen a couple mpg better. Since I can't use it on a regular basis so I'm not sure how much benefit I get from the rare tankful I can get.

In the long run, if I can figure out what to do with the water/ethanol extracted from the gasoline, it might benefit my lawn mower and Stihl more from regular use. For now, I try and only put in enough gas to get the job done then let it run dry if I won't be using them for a month or more.

C-dub

puma guy wrote: ↑Fri May 15, 2020 10:58 am
C-dub wrote: ↑Wed May 13, 2020 6:15 pm I've thought about "making" my own ethanol free gas for my mower and Stihl multitool motor. It's not difficult to do, but some equipment would make it so simple. I'm sure some of our chemists here can confirm this. I'm considering getting a separatory funnel and stand to do this. Since ethanol attracts water all one needs to do is mix in a cup or more of water to a half gallon of E-10 or E15 gas, shake to mix well, then just let it sit for several hours. The heavier water/ethanol mix will settle to the bottom, while the nearly pure lighter gasoline will remain at the top. Then, in my plan, I would just let the water/ethanol mix out the bottom of the separatory funnel until only the gasoline remained. There would be an easily visible line of separation. The only thing holding me up at this time is what to do with the water/ethanol mixture. It is still flammable and I don't know how I would get rid of it yet.
Gasoline is a complex blend of many petroleum constituents, plus additives. I'd check the octane and other qualities before using it. Probably simpler to by ethanol free gas. I've read of using aviation gas mixed with regular, but that could be a tedious project with out access to a research and motor octane engine. Also, while I'm not a pilot, I believe the fuel air mixture for plane engines is different than mogas engines. Jets and turbo prop engine use Jet fuel (basically high quality kerosene) so don't confuse it with avgas for cylinder engines.

It might be easier to buy ethanol free gas. Just a few years ago the closest place I could get some was at least 40 miles away. Now there’s a Buccees about 20 miles away.

For my plan I would need to use 93 octane and expect to end up with 87-88.

C-dub

WildBill wrote: ↑Thu May 14, 2020 1:01 pm
C-dub wrote: ↑Wed May 13, 2020 6:15 pm It is still flammable and I don't know how I would get rid of it yet.
If you use enough water to dilute the alcohol, the mixture would not be flammable.

Hmmm, I still don't think I could just pour it down the sink or flush it though.

C-dub

03Lightningrocks wrote: ↑Wed May 13, 2020 6:22 pm
C-dub wrote: ↑Wed May 13, 2020 6:15 pm I've thought about "making" my own ethanol free gas for my mower and Stihl multitool motor. It's not difficult to do, but some equipment would make it so simple. I'm sure some of our chemists here can confirm this. I'm considering getting a separatory funnel and stand to do this. Since ethanol attracts water all one needs to do is mix in a cup or more of water to a half gallon of E-10 or E15 gas, shake to mix well, then just let it sit for several hours. The heavier water/ethanol mix will settle to the bottom, while the nearly pure lighter gasoline will remain at the top. Then, in my plan, I would just let the water/ethanol mix out the bottom of the separatory funnel until only the gasoline remained. There would be an easily visible line of separation. The only thing holding me up at this time is what to do with the water/ethanol mixture.
It is still flammable and I don't know how I would get rid of it yet.

30 years ago we would have poured it on fire ant mounds.

Yeah and I think I still have some malathion around here somewhere.

C-dub

I've thought about "making" my own ethanol free gas for my mower and Stihl multitool motor. It's not difficult to do, but some equipment would make it so simple. I'm sure some of our chemists here can confirm this. I'm considering getting a separatory funnel and stand to do this. Since ethanol attracts water all one needs to do is mix in a cup or more of water to a half gallon of E-10 or E15 gas, shake to mix well, then just let it sit for several hours. The heavier water/ethanol mix will settle to the bottom, while the nearly pure lighter gasoline will remain at the top. Then, in my plan, I would just let the water/ethanol mix out the bottom of the separatory funnel until only the gasoline remained. There would be an easily visible line of separation. The only thing holding me up at this time is what to do with the water/ethanol mixture. It is still flammable and I don't know how I would get rid of it yet.

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