The response I received from Shell...
"Thank you for contacting Shell Solutions Center.
In the US:
In order to comply with the Government's Federal Renewable Fuel Standard (RFS), most Shell gasoline contain 10% ethanol by volume. Due to these Federal obligations, nearly every gallon of gasoline sold in the US must contain 10% ethanol. While all states sell gasoline with ethanol, there are limited areas where ethanol free gasoline is sold, mostly for RV (recreational vehicle), marine or outdoor use.
To determine whether the gasoline you are purchasing contains ethanol, you should look for a label on the dispenser indicating ethanol content. All gasoline stations should post a label on the dispenser advising if the gasoline contains ethanol and the maximum amount (depending on State laws, which may or may not make this labeling mandatory for 10% or less ethanol content).
In addition, the decision on whether to offer ethanol free gasoline is determined by each local Shell station as they are all independently owned and operated. And because Shell stations are all independently owned and operated locally, we would not have a listing of which stations offer which grades of fuel."
