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Ethanol gas causing fuel tank problems?

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  • #16
    Tom
    I wonder if the "phase gaurd 4" you mention is just a generic gas stabilizer?

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    • #17
      Ok a couple things to touch on here.

      "Ethanol gets worse MPG over regular gasoline"
      Technically true, but only because your engines compression ratio is not made for the E10 grade you are using. I'll explain in two parts.
      1. In other words, if you are considering an 87 octane straight unleaded vs e10 in your 1995 chevy truck with a 350v8. Yes your mileage will decrease because your vehicle is not made to adapt to "E" blended fuel. This is an issue as most states add ethanol to fuel to reduce emissions. Your MPG loss is only determined by your own vehicle so each persons lost MPG is different.
      2. In truth Ethanol has 34% less energy to its gas counter part but only when equated to the same compression ratio. Ethanol in true form has a higher octane rating so a change in compression ratio must be made, at which point it equals the MPG rating and the MPG rating can be increase beyond gasoline by turbocharging or supercharging the engine. Gale Banks is doing extensive testing on this now.

      When putting E85 in my E85 flexfuel vehicle I get worse MPG. TRUE. This is because the E85 engine is a hybrid of sorts. It has to have a lower compression ratio to be able to run on Gas and not detonate, yet just high enough to run on E85. The problem is that it is not optimized for straight E85.

      E10 or E85 "has or attracts water" Ethanol fuel blends "can" have water in them from the mfg process because the amount of water allowed to ethanol % is based on the fact that ethanol will allow for the water in part of phase seperation. But you are correct that too much water in the tank is bad and will lead to poor starting and poor MPG. Gas or ethanol mix both attract water and condensation in a fuel system. The effect on drivability and operation of the vehicle is based on several factors to each specific vehicle.

      Ethanol is bad for your Studebaker or any classic/antique car.
      TECHNICALLY NOT TRUE>
      1. if you ran only gasoline, which all of us have, in your car for several years, then yes it is bad to switch. The blend may cause any oxidized gas build up in your tank and lines to seperate and then clog your filters and fuel lines and even your jets and carb bowls. If your vehicle is freshly rebuilt and you start off with blended fuel you should not have any issues outside of having to adjust fuel and timing.

      2. Almost all MFG's of cars pre 50's offered 100% ethanol fuel vehicle options which mainly farmers purchased. Many farmers were not near gas stations and made their own fuel. Hence why it was an option.

      Ethanol as a fuel is not something that is new. Infact it was around before gas, but gas won out as a cheaper and more readily available option. As our own oil revolution took off, ethanol slowly faded away until it's re-surgence as an "addative" to fuel.

      You can convert any older car to run off of ethanol but you will need to modify your compression and timing as well as your air/fuel ratio.

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