Oxygenated vs unOxygenated fuel

**UKXK189** · 10-18-2007, 09:07 AM

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?

**Rivi** · 10-18-2007, 09:35 AM

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

**0rion** · 10-18-2007, 02:22 PM

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.

**UKXK189** · 10-18-2007, 02:24 PM

Alright, thanks guys.

**ss~zoso~ss** · 10-18-2007, 02:30 PM

i believe unoxygenated fuel is the same thing as dry gas.

**Rivi** · 10-18-2007, 03:05 PM

Originally Posted by Rivi

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.

**greatwhiteZ28** · 10-18-2007, 06:32 PM

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

**Rivi** · 10-19-2007, 06:57 AM

i wouldn't use it unless i had to.

**bigrondownhiller** · 10-22-2007, 11:31 AM

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.

**Rivi** · 10-22-2007, 11:47 AM

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.

**bigrondownhiller** · 10-22-2007, 11:51 AM

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.

**Rivi** · 10-23-2007, 04:15 AM

Originally Posted by bigrondownhiller

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?