[GFXjamie]

everywhere switches there blends, there is no getting away from it. All gasoline coming from the US gets switched september/october to the winter blends of fuel. Why do you think the gas prices drop like crazy around this time of year????

The winter gas is cheaper to make and also carriers more ethanol in it than summer blends do. Go some reading up on it on the web. I never looked into it until a year ago. I had no idea and it makes sense why the prices fluctuate so much