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Oxygenated vs unOxygenated fuel

This is a discussion on Oxygenated vs unOxygenated fuel within the General Help forums, part of the LSx Technical Help Section category; So, in asking some guys about tips for storing my car over the winter, some of them advised to fill ...

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    Pony Hater UKXK189's Avatar
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    Oxygenated vs unOxygenated fuel

    So, in asking some guys about tips for storing my car over the winter, some of them advised to fill the tank with unOxygenated fuel instead of the normal Oxygenated fuel. None of them however could seem to explain the difference or why it should be done. So, anyone know anything about this issue?

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    Yep,oxygenated fuel contains water,ethanol and ox ....you can guess the rest.

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    Veteran 0rion's Avatar
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    fish will live longer in oxygenated fuel.....


    I would think it'll help keep moisture out of your tank by using unoxygenated. I go against every rule on this one. For the last several years I've stored my car over the winter and I generally do everything people tell you not to do. I don't put stabil in it ( although I probably should) and I run the tank as close to empty as I can. Some years I'll go out and start it on occassion and let it get up to full operating temps ( mostly just to hear it run ) and some years it'll go 2 months or more without being started.

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    Pony Hater UKXK189's Avatar
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    Alright, thanks guys.

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    Senior Member ss~zoso~ss's Avatar
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    i believe unoxygenated fuel is the same thing as dry gas.

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    Quote Originally Posted by Rivi View Post
    Yep,oxygenated fuel contains water,ethanol and ox ....you can guess the rest.
    this combo can make such a mess in a fbody you won't believe it.

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    Senior Member greatwhiteZ28's Avatar
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    are you talking about that ethananol label % on gas pumps advertise?

    by me there some stations that have a % of ethanol wheile others dont? im also not sure what do even use on DD

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    i wouldn't use it unless i had to.

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    Senior Member bigrondownhiller's Avatar
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    you should store it with fuel stabilizer and a full tank. if it is not full you can get condensation in the tank. my boat always gets this. if you dont the tank will rust out and you will have 60 gallons of bad gas.

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    It is a sealed system so no moisture can get in BUT fuel last will longer in larger volumes. It is wise to fill up with fresh fuel and some fuel stabilizer.The moisture get in at the fuel depots and gas stations because the tanks are vented and Ethanol is like a spronge to water.What do think dry gas is made from??? yep you guessed it Ethanol.

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    Senior Member bigrondownhiller's Avatar
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    it is not totally sealed. if it were, you couldnt pump any fuel out. it would be like sucking soda out of a bottle. something has to take the place of the fuel as you use it.

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    Quote Originally Posted by bigrondownhiller View Post
    it is not totally sealed. if it were, you couldnt pump any fuel out. it would be like sucking soda out of a bottle. something has to take the place of the fuel as you use it.
    wrong,when the car is NOT running the system is totally sealed.It has to pass this test to meet EPA standards.Why do you think it has a vapor recovery system?
    Last edited by Rivi; 10-23-2007 at 07:02 AM.

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    Senior Member bigrondownhiller's Avatar
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    it doesnt let vapor out, yes, but it does let air in.

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    Quote Originally Posted by bigrondownhiller View Post
    it doesnt let vapor out, yes, but it does let air in.
    not when its not running and thats the issue here.Nothing is vented,trust me on this.

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