https://wiki.opensourceecology.org/index.php?action=history&feed=atom&title=Ethanol_Free_Gasoline 2026-04-14T06:59:31Z Revision history for this page on the wiki MediaWiki 1.39.13 https://wiki.opensourceecology.org/index.php?title=Ethanol_Free_Gasoline&diff=323163&oldid=prev 2026-04-13T16:44:32Z

<p>Created Page + Added Basic Sections/Info</p> <p><b>New page</b></p><div>=Basics=<br /> *(Typically Conventional Fossil Oil/Fossil Fuel Derived) [[Gasoline]] without any [[Ethanol]]<br /> **Most Road Gasoline is typically [[E10]] (ie a 10% Blend of Ethanol)<br /> **Some countries use Methanol instead of Ethanol, Ethanol Free Gasoline tends to not have any methanol either however <br /> *This has some advantages in Old Engines, and [[Small Engines]] , but in most modern Spark Ignition ICE Vehicles, E-10 is fine outside of if predicted long term storage is planned within a tank.<br /> **Certain vehicles can even handle [[E-15]] - [[E-85]] , the [[Brazilian Ethanol Economy]] has vehicles capable of E-100 (or Mostly Pure Ethanol, Short of a bit of water and MAYBE a denaturant; citation needed)<br /> <br /> =Reasons for Using It=<br /> ==Greater Stability in Storage==<br /> *Given [[Ethanol]] (and most other [[Fuel Alcohols]] short of [[Butanol]] ) are Hydroscopic, if left to sit, ESPECIALLY in poorly sealed (such as simple vented) containers and/or in Humid Areas, or if exposed to Rain/Dew (Such as an [[Underground Storage Tank]] or poorly sealed [[Internal Floating Roof Tank]] etc), this can be a major problem<br /> *In particular, once it gets to a certain level, [[Phase Separation]] will occur leaving a Water-Ethanol solution, and an Out of Spec Gasoline (ie due to lack of ethanol (which was part of the mix that got it “to spec”) it’s [[Octane Rating]] and/or [[RVP]] etc may have changed enough to cause issues<br /> <br /> ==Avoiding Corrosion/Issues (Especially in Older/Small Engines==<br /> *While it CAN be managed with proper design, again especially with lots of time, Ethanol can dissolve certain seal materials/react with some plastics<br /> *Also Corrosion of Metal Surfaces can be accelerated due to the ethanol and/or water itself, or a complex reaction of products produced by those sitting and/or metal interactions and/or [[Fuel Tank Microbiota]]<br /> <br /> ==Energy Density==<br /> *This is essentially N/A for everything, BUT to an extent if you wanted to max out endurance and were super concerned about [[SWAP]] etc (such as for a backup generator or some other “critical” use) the higher [[Specific Energy]] in the NON-Ethanol [[Components of Gasoline]] may be of use<br /> **Akin to the Rationale of [[Zip Fuels]] / the Odd Fuels used in Cruise Missiles or (Some) Torpedos/Rockets (Excluding Mixtures using Unconventional Oxidizers etc)<br /> <br /> =Where to Get It=<br /> ==By Pump==<br /> *Most Marinas / Large Gas Stations or Truck Stops etc will have Ethanol Free Gasoline<br /> **This is typically also distinguished by a Blue Icon / Pump Handle etc<br /> ***Not always though<br /> **There are also Websites / Apps to locate nearby stations etc<br /> <br /> ==By Container==<br /> *In areas without Available Pump EFG, it may make sense to purchase it in smaller containers<br /> *Some Landscaping/Home Improvement Stores will sell “4 Cycle Gas” which tends to be EFG which ALSO does not have [[2-Stroke Oil]] unlike the Premixed [[2-Stroke Gas]] <br /> **Some of this is ALSO [[Alkylate Fuel]] which is neat<br /> <br /> =Internal Links=<br /> *<br /> <br /> =External Links=<br /> *<br /> <br /> [[Category: Fuels]]</div>

Eric