Anybody know what the winter blended fuel(10% ethynol,oxygenated etc.) dates are in the north east? I know I cant wait to get crappy fuel millage again.

 

In my area, we have 10% ethynol year-around

 

i was just in PA yesterday with my gf and when we stopped to get gas she noticed that it was 10 percent ethanol, shes not weird or anything, we were talking about ethanol/flex fuel/electric/hydrogen cars earlier that day lol

 

It used to be Oct 15 - Apr 15 for New York State when I lived there. Pennsylvania may be different.

Colorado fuel has 10% ethanol all year around since we are among the corn producing states. My gas mileage still drops about 10% in the winter time, so I believe that it's caused by the cold temperature.

 

We've got ethanol in the fuel here in Florida, too.

 

Thank you for all of the replies,We have 10% in most fuel year round here.But their is still a winter blend fuel as well.( I can always tell by my fuel millage) around this time of year.

 

whats in it that makes it different?

 

I wish I could say for sure,maybe it`s just oxygenated.

 

FOUND IT!!!

A typical summer gasoline blend might consist of 40% FCC gas, 25% straight run gas, 15% alkylate, 18% reformate, and 2% butane. The RVP of the gasoline blend depends on how much of each component is in the blend, and what the RVP is of each component. (RVP is the vapor pressure of the blend at 100 degrees F.)

In the summer, the butane fraction must be very low in the gasoline, or the overall RVP of the blend will be too high. That is the primary difference between winter and summer gasoline blends.

Butane is a cheaper blending component than most of the other ingredients. That makes fall and winter gasoline cheaper to produce. The RVP is stepped back down to summer levels starting in the spring, and this usually causes prices to increase.

And the complaints about poor fuel performance and economy in the winter? It's not really the fuel's fault. The weather is largely responsible; after all, it is winter - low cranking voltage in the battery, increased oil viscosity, atmospheric condensation in underground fuel tanks and so forth.

 

Hey cool!! Great research!! I guess that explains it pretty well...... Only, I disagree with the last paragraph, it`s mostly the fuel that is the culprit.I`d say a 90% Fuel-10% other mentioned. And the ecm richens up the fuel mixture as well.

 

something i thought was odd was that there was no mention of ethanol in those percentages