Where to buy real gas
Apparently you live in a "non-attainment" area designated as such by the US EPA because of your failure to meet nat'l emissions standards for hazardous air pollutants. To improve air quality, EPA thru NJ DEP requires the use of RFG (reformulated gas). In the past they used MTBE as an oxygenator. But I suspect that because of leakage and subsequent contamination of groundwater, EPA switched to the more expensive ethanol (ethyl alcohol). If you are looking for gas without the additive, go to the nearest county that is not a non-attainment area. You will know this instinctively because the gas is at least 10 cents/gallon cheaper. Or call NJ DEP. In my case (I'm in Phila) the nearest area is about 30 miles NW or Allentown. Gas prices there were $2.75/gal two weeks ago. Good hunting.
As to whether it will damage the engine, would the Feds do anything that would hurt us?