"Ethanol Free" Fuel, May Not Be

[wag123]

It depends too on if the fuel tank is vented direct to the atmosphere. If it is then water easily gets in. Both of my JD mowers are non vented. So the fuel is never exposed to the atmospheric moisture and there is no need to drain the fuel really. I do fill them full in the fall. Went 23 years with the old one before I found the carb fuel drain.

Huh?
The fuel tank MUST be vented to the atmosphere or when it is running it will pull a vacuum, lose fuel feed, and die. On some riders with a fuel pump it can pull enough of a vacuum to collapse the gas tank if the tank wasn't vented. On some riders there is a vent on top of the fuel cap that can be manually screwed closed. The carburetor must also be vented to the atmosphere.

 

[Lawnman23]

Used to be the only thing you couldn't trust at a gas station was the sushi and pot of bubbling chili.

 

[wings&wheels]

Same logic applies to high octane fuel. Unless the prior customer bought the high end fuel, you will get some amount of the lower spec stuff. I try to only fill my high octane needing cars when they are at a half tank or less remaining for this reason; dilute whatever was in the line with more high octane fuel. CuJet's indication of just how much remains is troubling.

Oh, stay away from the hot dogs on the stainless rollers.....

 

[Jetronic]

You can add water to it and then skim off the good stuff.

and put the water+ ethanol in the windcsreen washer tank

 

[SHOZ]

Huh?
The fuel tank MUST be vented to the atmosphere or when it is running it will pull a vacuum, lose fuel feed, and die. On some riders with a fuel pump it can pull enough of a vacuum to collapse the gas tank if the tank wasn't vented. On some riders there is a vent on top of the fuel cap that can be manually screwed closed. The carburetor must also be vented to the atmosphere.

They have a simple vapor loop to the carb and a fuel pump to suck/push. Neither cap is vented. The new JD Z320m fuel tank is a pain to fill do to expansion space. But you can get a half gallon more than rated in it!

 

[wag123]

They have a simple vapor loop to the carb and a fuel pump to suck/push. Neither cap is vented. The new JD Z320m fuel tank is a pain to fill do to expansion space. But you can get a half gallon more than rated in it!

This is how the tank is vented. You simply can not have an unvented fuel tank on any OPE.

 

[SHOZ]

This is how the tank is vented. You simply can not have an unvented fuel tank on any OPE.

They are not vented as with a hole in the cap or direct to the atmosphere. The caps say non vented.

 

[jeepman3071]

CA is difficult with E0, however, it is good to note that non oxygenated race fuels are available such as Sunoco Optima 95 octane unleaded and VP C9 96 octane unleaded, as is 100LL Avgas, and Swift 94 octane Avgas. Possibly even the GAMI 102 octane Avgas.

I heard race fuel is pretty cheap.

 

[Slick3914]

Wawa ethanol free has a dedicated hose.

 

[Chris142]

CA is difficult with E0, however, it is good to note that non oxygenated race fuels are available such as Sunoco Optima 95 octane unleaded and VP C9 96 octane unleaded, as is 100LL Avgas, and Swift 94 octane Avgas. Possibly even the GAMI 102 octane Avgas.

ya but race gas is $20+ per gallon in my area. i tried to buy airplane fuel at the airport and they wouldnt sell to me carrying a gas can.

 

[Dave9]

This is how the tank is vented. You simply can not have an unvented fuel tank on any OPE gasoline engine.

FTFY

No matter where the vent is, it has one but for years -> decades it has been a one way vent that only takes in air, not letting vapors out, until you refill the tank of course and have to displace the air with fuel.

 

[billt460]

ya but race gas is $20+ per gallon in my area. i tried to buy airplane fuel at the airport and they wouldnt sell to me carrying a gas can.

Here they'll pump AV gas, (LL 100), into a can or a boat. There are also several stations in town that sell it.

 

[mk378]

Wawa ethanol free has a dedicated hose.

There are a lot of pumps that present the customer with separate hoses for the three octane grades, but those hoses are actually connected to a manifold pipe in the top of the pump which goes to one metering mechanism and one filter in the base.

On the other hand, there are also pumps that have gas on one side and diesel on the other. Those couldn't allow any mixing and maybe they are using that type of pump for ethanol vs non.

 

[mk378]

You can add water to it and then skim off the good stuff.

I never understood why this is considered a good idea. The product that you end up with will still contain some alcohol, and it will also be fully saturated with water that it didn't have before. It would be better to just run the E10 if that is all you have.

 

[SHOZ]

I never understood why this is considered a good idea. The product that you end up with will still contain some alcohol, and it will also be fully saturated with water that it didn't have before. It would be better to just run the E10 if that is all you have.

If you add a surplus of water it takes the alcohol out with it. Then they separate and you drain off the gas that is floating on top. You will end up with lower octane than what you started.

 

[jeepman3071]

ya but race gas is $20+ per gallon in my area. i tried to buy airplane fuel at the airport and they wouldnt sell to me carrying a gas can.

+1

 

[Doc8404]

I use Startron anyway.

 

[zrxkawboy]

What was absolutely amazing was the color change that occurred at the 1.5 gallon mark.

Good to know!

 

[tbm5690]

ya but race gas is $20+ per gallon in my area. i tried to buy airplane fuel at the airport and they wouldnt sell to me carrying a gas can.

You should go to a small airport that has a self serve pump.

 

[Nesterenko]

CA is difficult with E0, however, it is good to note that non oxygenated race fuels are available such as Sunoco Optima 95 octane unleaded and VP C9 96 octane unleaded, as is 100LL Avgas, and Swift 94 octane Avgas. Possibly even the GAMI 102 octane Avgas.

Always liked anything Sunoco. Those are nice looking cans. Not pertinent I know but...had to.