[Carry_Okie]

I was comparing California and Texas.

The price difference between Texas and California today is $0.40 per gallon.

It ain't all taxes.

Oregon and Washington are now using "special" formulations too, which is news to me, thank you.

[thackney]

Looks to be a pretty steady difference.

It ain't all taxes.

about 3/4 of the difference is taxes.

http://www.api.org/Oil-and-Natural-Gas-Overview/Industry-Economics/~/media/Files/Statistics/gasoline-diesel-summary.ashx

Oregon and Washington are now using "special" formulations too

But not the same formulation as California. Many refineries now produce gasoline blending components and the blenders make the final product.